B-Physics anomalies have recently raised renewed interest in leptoquarks, predicted in several th... more B-Physics anomalies have recently raised renewed interest in leptoquarks, predicted in several theoretical frameworks. Under simplifying but conservative assumptions, we show that the current limits from LHC searches together with the requirement to explain the observed value for $$R_{D^{(*)}}$$ R D ( ∗ ) constrain the $$R_2$$ R 2 leptoquark mass to be in the range of $$800 \le m_{R_2} \le 1000$$ 800 ≤ m R 2 ≤ 1000 GeV. We study the search for $$R_2$$ R 2 at the LHeC via its resonance in the $$b\tau $$ b τ final state by performing a cut-and-count analysis of the signal and the dominant Standard Model backgrounds. We find that the LHeC has an excellent discovery potential for the $$R_2$$ R 2 leptoquark even for couplings to the first generation as small as $${\mathcal {O}}(10^{-2})$$ O ( 10 - 2 ) .
Autonomous underwater vehicles (AUVs) are used to execute an increasingly challenging set of miss... more Autonomous underwater vehicles (AUVs) are used to execute an increasingly challenging set of missions in commercial, environmental and defense industries. The resources available to the AUV in service of these missions are typically a limited power supply and onboard sensing of its local environment. Optimal path planning is needed to maximize the chances that these AUVs will successfully complete longendurance missions within their power budget. A time-optimal path planner has been recently developed to minimize AUV mission time required to traverse a dynamic ocean environment at a specified speed through the water. For many missions, time minimization is appropriate because the AUVs operate at a fixed propeller speed. However, the ultimate limiting constraint on AUV operations is often the onboard power supply, rather than mission time. While an empirical or theoretical relationship between mission time and power could be applied to estimate power usage in the path planner, the real power usage and availability on an AUV varies mission-to-mission, as a result of multiple factors, including vehicle buoyancy, battery charge cycle, fin configuration, and water type or quality. In this work, we use data collected from two mid-size AUVs operating in various conditions to learn the mission-to-mission variability in the power budget so that it could be incorporated into the mission planner.
The significant neutrino flux at high rapidity at the LHC motivates dedicated forward detectors t... more The significant neutrino flux at high rapidity at the LHC motivates dedicated forward detectors to study the properties of neutrinos at TeV energies. We investigate magnetic dipole interactions between the active neutrinos and new sterile states at emulsion and liquid argon experiments that could be located in a future Forward Physics Facility (FPF) downstream of the ATLAS interaction point. The up-scattering of neutrinos off electrons produces an electron recoil signature that can probe new regions of parameter space at the High Luminosity LHC (HL-LHC), particularly for liquid argon detectors due to low momentum thresholds. We also consider the decay of the sterile neutrino through the dipole operator, which leads to a photon that could be displaced from the production vertex. FPF detectors can test sterile neutrino states as heavy as 1 GeV produced through the dipole portal, highlighting the use of high energy LHC neutrinos as probes of new physics.
We investigate the prospect of probing the type III seesaw neutrino mass generation mechanism at ... more We investigate the prospect of probing the type III seesaw neutrino mass generation mechanism at various collider experiments by searching for a disappearing track signature as well as a displaced vertex originating from the decay of $SU(2)_L$ triplet fermion ($\Sigma$). Because the triplet fermion is primarily produced at colliders through the electroweak gauge interactions, its production rate is uniquely determined by its mass. Using the type III seesaw formula, we find that a $\Sigma$ particle with mass of a few hundred GeV, once produced, leads to a disappearing track signature which can be probed at the LHC and high luminosity LHC while the displaced vertex signature can be probed by various proposed experiments such as MATHUSLA, LHeC, and FCC-he.
Enrico Bertuzzo, ∗ Sudip Jana, 3, † Pedro A. N. Machado, ‡ and Renata Zukanovich Funchal § Depart... more Enrico Bertuzzo, ∗ Sudip Jana, 3, † Pedro A. N. Machado, ‡ and Renata Zukanovich Funchal § Departamento de F́ısica Matemática, Instituto de F́ısica Universidade de São Paulo, C.P. 66.318, São Paulo, 05315-970, Brazil Department of Physics and Oklahoma Center for High Energy Physics, Oklahoma State University, Stillwater, OK 74078-3072, USA Theory Department, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510, USA (Dated: July 27, 2018)
With advances in engineering and technology, mining the deep sea for untapped rare metal resource... more With advances in engineering and technology, mining the deep sea for untapped rare metal resources from the bottom of the ocean has recently become economically viable. However, extracting these metal ores from the seabed creates plumes of fine particles that are deposited at various depths within the ocean, and these may be extremely harmful to the marine ecosystems and its components. Thus, for sustainable management, it is of utmost importance to carefully monitor and predict the impact of such harmful activities including plume dispersion on the marine environment. To forecast the plume dispersion in real-time, data-driven ocean modeling has to be coupled with accurate, efficient, and rigorous sediment plume transport computations. The goal of the present paper is to demonstrate the real-time applications of our coupled 3D-and time data-driven ocean modeling and plume transport forecasting system. Here, the region of focus is the southern California bight, where the PLUMEX 2018 ...
We discuss a mechanism of neutrinoless double beta decay, where neutrinos of different flavours c... more We discuss a mechanism of neutrinoless double beta decay, where neutrinos of different flavours come into play. This is realized by effective flavour-violating scalar interactions. As one consequence, we find that within the normal mass ordering the neutrino effective mass may no longer vanish due to contributions from other flavours. We evaluate the necessary nuclear matrix elements, consider the interference between the standard diagram and the new scalar one, and analyze a UV-complete model that realizes the scalar interaction. Tests of the complete model are possible at colliders and future neutrino experiments. Our scenario represents an alternative mechanism for neutrinoless double beta decay, where nevertheless lepton number violation resides only in Majorana mass terms of light neutrinos.
Guo-yuan Huang,1, ∗ Sudip Jana,1, † Farinaldo S. Queiroz,2, 3, ‡ and Werner Rodejohann1, § Max-Pl... more Guo-yuan Huang,1, ∗ Sudip Jana,1, † Farinaldo S. Queiroz,2, 3, ‡ and Werner Rodejohann1, § Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany International Institute of Physics, Universidade Federal do Rio Grande do Norte, Campus Universitario, Lagoa Nova, Natal-RN 59078-970, Brazil Departamento de Fisica, Universidade Federal do Rio Grande do Norte, 59078-970, Natal, RN, Brasil Millennium Institute for SubAtomic Physics at the High-energy frontIeR, SAPHIR, Chile
We show that the rate for di-Higgs production at the LHC can be enhanced by a factor as large as ... more We show that the rate for di-Higgs production at the LHC can be enhanced by a factor as large as 25 compared to the Standard Model value in the two Higgs doublet model, while being consistent with the known properties of the observed Higgs boson h. There are correlated modifications in tth and resonant Zh production rates, which can serve as tests of this model. Our framework treats both Higgs doublets on equal footing, each with comparable Yukawa couplings to fermions. The ChengSher ansatz for multi-Higgs doublet model is shown to be strongly disfavored by current experiments. We propose a new ansatz for the Yukawa couplings of the Higgs doublets Φa is proposed, where Y (a) ij = C (a) ij ·min{mi, mj}/v, with C (a) ij being order one coefficients, mi the mass of fermion i and v the electroweak vacuum expectation value. Such a pattern of couplings can explain the observed features of fermion masses and mixings and satisfies all flavor violation constraints arising from the exchange o...
After reviewing the basic tenets of the SM, several BSM scenarios that alleviate these shortcomin... more After reviewing the basic tenets of the SM, several BSM scenarios that alleviate these shortcomings are investigated. Various well motivated new models have been proposed to shed light on some of the unresolved puzzles of fundamental physics posed by the SM. Emphasis is placed on the study of confronting neutrino mass generation mechanism with the experimental probes and to develop the Higgs bosons as a tool of searching for new physics. Each model has its own distinctive features and diverse phenomenological consequences. Observation prospects and discovery potentials of these models at current and future collider and neutrino experiments are quantified. This thesis depicts an endeavor to shed light on BSM physics with the new physics scale ranging from MeV to TeV scale having testable signals at the colliders as well as at the neutrino experiments.
We propose a new model for explaining the diphoton excess observed at the LHC. The uniqueness of ... more We propose a new model for explaining the diphoton excess observed at the LHC. The uniqueness of our model is that this excess is being produced by photon-photon induced sub-process. The model includes an isospin $3/2$ scalar multiplet (having triply, doubly and singly charged scalars) at the electroweak (EW) scale to explain the observed neutrino masses via the effective dimension $7$ operator. The model also include a singlet scalar which is the di-photon resonance. The loop induced coupling of the singlet scalar with a pair of photons is enhanced due to contributions from multi-charged EW-scale scalars (component of isospin $3/2$ multiplet) in the loop. We examine the production of the singlet scalar at the LHC via photon-photon fusion sub-process and its subsequent decay to di-photon. We found that a large part of parameter space of the present model can explain the observed excess of di-photon events at the LHC. We also study the other decay modes of the singlet scalar and the ...
We investigate the prospect of searching for new physics via the novel signature of same-sign dib... more We investigate the prospect of searching for new physics via the novel signature of same-sign diboson + / ET at current and future LHC. We study three new physics models: (i) natural SUSYmodels, (ii) type-III seesaw model and (iii) type-II seesaw/GeorgiMachacek model. In the first two class of models, this signature arises due to the presence of a singly-charged particle which has lifetime long enough to escape detection, while in the third model this signature originates resonantly from a doubly-charged particle produced along with two forward jets that, most likely, would escape detection. We analyze in great detail the discovery prospects of the signal in these three classes of models in the current as well as the upcoming runs of the LHC (such as HL-LHC and HE-LHC) by showing a distinction among these scenarios. ∗E-mail: [email protected] †E-mail: [email protected] ‡E-mail: [email protected] ar X iv :2 10 6. 03 88 8v 1 [ he pph ] 7 J un 2 02 1
In this study, the Empirical Orthogonal Function (EOF) analysis was accomplished on a long term m... more In this study, the Empirical Orthogonal Function (EOF) analysis was accomplished on a long term monthly Sea Surface Temperature (SST) data over the Bay of Bengal (BOB) through the Singular Value Decomposition (SVD) method. Monthly temperature data was obtained from the assimilation of recent ARGO observations into the Levitus Climatology using objective analysis technique. The aim of this study is divided into two categories : the intrinsicvaluable information obtained through EOF and reconstruction of the whole data from the dominant modes. Computational accuracy was calculated through skill analysis. Comparison between the original and reconstructed dataset revealed that EOF analysis extracts the small intrinsic signals and acts like a smoothing technique filtering out the unwanted signals. Reconstruction with five dominant modes is sufficient to express the basin dynamics for the BOB. Skill analysis revealed accuracy of reconstruction with respect to original SST in the range of ...
A certain class of new physics models includes long-lived particles which are singlet under the S... more A certain class of new physics models includes long-lived particles which are singlet under the Standard Model (SM) gauge group. A displaced vertex is a spectacular signature to probe such particles productions at the high energy colliders, with a negligible SM background. In the context of the minimal gauged B−L extended SM, we consider a pair creation of Majorana right-handed neutrinos (RHNs) at the high energy colliders through the production of the SM and the B − L Higgs bosons and their subsequent decays into RHNs. With parameters reproducing the neutrino oscillation data, we show that the RHNs are long-lived and their displaced vertex signature can be observed at the next generation displaced vertex search experiments, such as the HL-LHC, the MATHUSLA, the LHeC, and the FCC-eh. We find that the lifetime of the RHNs is controlled by the lightest light neutrino mass, which leads to a correlation between the displaced vertex search and the search limit of the future neutrinoless ...
A pressing environmental question facing the ocean is the potential impact of possible deep-sea m... more A pressing environmental question facing the ocean is the potential impact of possible deep-sea mining activities. This work presents our initial results in developing an ocean and plume modeling system for the Bismark Sea where deep sea mining operations will probably take place. We employ the MSEAS modeling system to both simulate the ocean and to downscale initial conditions from a global system (HYCOM) and tidal forcing from the global TPXO-8 Atlas. We found that at least 1.5 km resolution was needed to adequately resolve the multiscale flow fields. In St. Georges channel, the interaction between the tides, background currents, and underlying density fields increased the subtidal flows. Comparing to historical transport estimates, we showed that tidal forcing is needed to maintain the correct subtidal transport through that Channel. Comparisons with past simulations and measured currents all showed good agreement between the MSEAS hindcasts. Quantitative comparisons made between...
We present a simple extension of the Standard Model that leads to renormalizable long-range vecto... more We present a simple extension of the Standard Model that leads to renormalizable long-range vector-mediated neutrino self-interactions. This model can resolve the Hubble tension by delaying the onset of neutrino free-streaming during recombination, without conflicting with other measurements. The extended gauge, scalar and neutrino sectors lead to observable signatures, including invisible Higgs and Z decays, thereby relating the Hubble tension to precision measurements at the LHC and future colliders. The model has a new neutrinophilic gauge boson with m Z ∼ O(10 eV) and charged Higgses at a few 100 GeV. It requires hidden neutrinos with active-hidden mixing angles larger than 5 × 10 −4 and masses in the range 1 ÷ 300 eV, which could also play a role for short baseline neutrino oscillation anomalies.
We report the results of sea exercises that demonstrate the real-time capabilities of our fundame... more We report the results of sea exercises that demonstrate the real-time capabilities of our fundamental time-optimal path planning theory and software with real ocean vehicles. The exercises were conducted with REMUS 600 Autonomous Underwater Vehicles (AUVs) in the Buzzards Bay and Vineyard Sound Regions on 21 October and 6 December 2016. Two tests were completed: (i) 1-AUV time-optimal tests and (ii) 2-AUV race tests where one AUV followed a time-optimal path and the other a shortest-distance path between the start and finish locations. The time-optimal planning proceeded as follows. We first forecast, in real-time, the physical ocean conditions in the above regions and times utilizing our MSEAS multi-resolution primitive equation ocean modeling system. Next, we planned time-optimal paths for the AUVs using our level-set equations and real-time ocean forecasts, and accounting for operational constraints (e.g. minimum depth). This completed the planning computations performed onboard a research vessel. The forecast optimal paths were then transferred to the AUV operating system and the vehicles were piloted according to the plan. We found that the forecast currents and paths were accurate. In particular, the time-optimal vehicles won the races, even though the local currents and geometric constraints were complex. The details of the results were analyzed off-line after the sea tests.
B-Physics anomalies have recently raised renewed interest in leptoquarks, predicted in several th... more B-Physics anomalies have recently raised renewed interest in leptoquarks, predicted in several theoretical frameworks. Under simplifying but conservative assumptions, we show that the current limits from LHC searches together with the requirement to explain the observed value for $$R_{D^{(*)}}$$ R D ( ∗ ) constrain the $$R_2$$ R 2 leptoquark mass to be in the range of $$800 \le m_{R_2} \le 1000$$ 800 ≤ m R 2 ≤ 1000 GeV. We study the search for $$R_2$$ R 2 at the LHeC via its resonance in the $$b\tau $$ b τ final state by performing a cut-and-count analysis of the signal and the dominant Standard Model backgrounds. We find that the LHeC has an excellent discovery potential for the $$R_2$$ R 2 leptoquark even for couplings to the first generation as small as $${\mathcal {O}}(10^{-2})$$ O ( 10 - 2 ) .
Autonomous underwater vehicles (AUVs) are used to execute an increasingly challenging set of miss... more Autonomous underwater vehicles (AUVs) are used to execute an increasingly challenging set of missions in commercial, environmental and defense industries. The resources available to the AUV in service of these missions are typically a limited power supply and onboard sensing of its local environment. Optimal path planning is needed to maximize the chances that these AUVs will successfully complete longendurance missions within their power budget. A time-optimal path planner has been recently developed to minimize AUV mission time required to traverse a dynamic ocean environment at a specified speed through the water. For many missions, time minimization is appropriate because the AUVs operate at a fixed propeller speed. However, the ultimate limiting constraint on AUV operations is often the onboard power supply, rather than mission time. While an empirical or theoretical relationship between mission time and power could be applied to estimate power usage in the path planner, the real power usage and availability on an AUV varies mission-to-mission, as a result of multiple factors, including vehicle buoyancy, battery charge cycle, fin configuration, and water type or quality. In this work, we use data collected from two mid-size AUVs operating in various conditions to learn the mission-to-mission variability in the power budget so that it could be incorporated into the mission planner.
The significant neutrino flux at high rapidity at the LHC motivates dedicated forward detectors t... more The significant neutrino flux at high rapidity at the LHC motivates dedicated forward detectors to study the properties of neutrinos at TeV energies. We investigate magnetic dipole interactions between the active neutrinos and new sterile states at emulsion and liquid argon experiments that could be located in a future Forward Physics Facility (FPF) downstream of the ATLAS interaction point. The up-scattering of neutrinos off electrons produces an electron recoil signature that can probe new regions of parameter space at the High Luminosity LHC (HL-LHC), particularly for liquid argon detectors due to low momentum thresholds. We also consider the decay of the sterile neutrino through the dipole operator, which leads to a photon that could be displaced from the production vertex. FPF detectors can test sterile neutrino states as heavy as 1 GeV produced through the dipole portal, highlighting the use of high energy LHC neutrinos as probes of new physics.
We investigate the prospect of probing the type III seesaw neutrino mass generation mechanism at ... more We investigate the prospect of probing the type III seesaw neutrino mass generation mechanism at various collider experiments by searching for a disappearing track signature as well as a displaced vertex originating from the decay of $SU(2)_L$ triplet fermion ($\Sigma$). Because the triplet fermion is primarily produced at colliders through the electroweak gauge interactions, its production rate is uniquely determined by its mass. Using the type III seesaw formula, we find that a $\Sigma$ particle with mass of a few hundred GeV, once produced, leads to a disappearing track signature which can be probed at the LHC and high luminosity LHC while the displaced vertex signature can be probed by various proposed experiments such as MATHUSLA, LHeC, and FCC-he.
Enrico Bertuzzo, ∗ Sudip Jana, 3, † Pedro A. N. Machado, ‡ and Renata Zukanovich Funchal § Depart... more Enrico Bertuzzo, ∗ Sudip Jana, 3, † Pedro A. N. Machado, ‡ and Renata Zukanovich Funchal § Departamento de F́ısica Matemática, Instituto de F́ısica Universidade de São Paulo, C.P. 66.318, São Paulo, 05315-970, Brazil Department of Physics and Oklahoma Center for High Energy Physics, Oklahoma State University, Stillwater, OK 74078-3072, USA Theory Department, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510, USA (Dated: July 27, 2018)
With advances in engineering and technology, mining the deep sea for untapped rare metal resource... more With advances in engineering and technology, mining the deep sea for untapped rare metal resources from the bottom of the ocean has recently become economically viable. However, extracting these metal ores from the seabed creates plumes of fine particles that are deposited at various depths within the ocean, and these may be extremely harmful to the marine ecosystems and its components. Thus, for sustainable management, it is of utmost importance to carefully monitor and predict the impact of such harmful activities including plume dispersion on the marine environment. To forecast the plume dispersion in real-time, data-driven ocean modeling has to be coupled with accurate, efficient, and rigorous sediment plume transport computations. The goal of the present paper is to demonstrate the real-time applications of our coupled 3D-and time data-driven ocean modeling and plume transport forecasting system. Here, the region of focus is the southern California bight, where the PLUMEX 2018 ...
We discuss a mechanism of neutrinoless double beta decay, where neutrinos of different flavours c... more We discuss a mechanism of neutrinoless double beta decay, where neutrinos of different flavours come into play. This is realized by effective flavour-violating scalar interactions. As one consequence, we find that within the normal mass ordering the neutrino effective mass may no longer vanish due to contributions from other flavours. We evaluate the necessary nuclear matrix elements, consider the interference between the standard diagram and the new scalar one, and analyze a UV-complete model that realizes the scalar interaction. Tests of the complete model are possible at colliders and future neutrino experiments. Our scenario represents an alternative mechanism for neutrinoless double beta decay, where nevertheless lepton number violation resides only in Majorana mass terms of light neutrinos.
Guo-yuan Huang,1, ∗ Sudip Jana,1, † Farinaldo S. Queiroz,2, 3, ‡ and Werner Rodejohann1, § Max-Pl... more Guo-yuan Huang,1, ∗ Sudip Jana,1, † Farinaldo S. Queiroz,2, 3, ‡ and Werner Rodejohann1, § Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany International Institute of Physics, Universidade Federal do Rio Grande do Norte, Campus Universitario, Lagoa Nova, Natal-RN 59078-970, Brazil Departamento de Fisica, Universidade Federal do Rio Grande do Norte, 59078-970, Natal, RN, Brasil Millennium Institute for SubAtomic Physics at the High-energy frontIeR, SAPHIR, Chile
We show that the rate for di-Higgs production at the LHC can be enhanced by a factor as large as ... more We show that the rate for di-Higgs production at the LHC can be enhanced by a factor as large as 25 compared to the Standard Model value in the two Higgs doublet model, while being consistent with the known properties of the observed Higgs boson h. There are correlated modifications in tth and resonant Zh production rates, which can serve as tests of this model. Our framework treats both Higgs doublets on equal footing, each with comparable Yukawa couplings to fermions. The ChengSher ansatz for multi-Higgs doublet model is shown to be strongly disfavored by current experiments. We propose a new ansatz for the Yukawa couplings of the Higgs doublets Φa is proposed, where Y (a) ij = C (a) ij ·min{mi, mj}/v, with C (a) ij being order one coefficients, mi the mass of fermion i and v the electroweak vacuum expectation value. Such a pattern of couplings can explain the observed features of fermion masses and mixings and satisfies all flavor violation constraints arising from the exchange o...
After reviewing the basic tenets of the SM, several BSM scenarios that alleviate these shortcomin... more After reviewing the basic tenets of the SM, several BSM scenarios that alleviate these shortcomings are investigated. Various well motivated new models have been proposed to shed light on some of the unresolved puzzles of fundamental physics posed by the SM. Emphasis is placed on the study of confronting neutrino mass generation mechanism with the experimental probes and to develop the Higgs bosons as a tool of searching for new physics. Each model has its own distinctive features and diverse phenomenological consequences. Observation prospects and discovery potentials of these models at current and future collider and neutrino experiments are quantified. This thesis depicts an endeavor to shed light on BSM physics with the new physics scale ranging from MeV to TeV scale having testable signals at the colliders as well as at the neutrino experiments.
We propose a new model for explaining the diphoton excess observed at the LHC. The uniqueness of ... more We propose a new model for explaining the diphoton excess observed at the LHC. The uniqueness of our model is that this excess is being produced by photon-photon induced sub-process. The model includes an isospin $3/2$ scalar multiplet (having triply, doubly and singly charged scalars) at the electroweak (EW) scale to explain the observed neutrino masses via the effective dimension $7$ operator. The model also include a singlet scalar which is the di-photon resonance. The loop induced coupling of the singlet scalar with a pair of photons is enhanced due to contributions from multi-charged EW-scale scalars (component of isospin $3/2$ multiplet) in the loop. We examine the production of the singlet scalar at the LHC via photon-photon fusion sub-process and its subsequent decay to di-photon. We found that a large part of parameter space of the present model can explain the observed excess of di-photon events at the LHC. We also study the other decay modes of the singlet scalar and the ...
We investigate the prospect of searching for new physics via the novel signature of same-sign dib... more We investigate the prospect of searching for new physics via the novel signature of same-sign diboson + / ET at current and future LHC. We study three new physics models: (i) natural SUSYmodels, (ii) type-III seesaw model and (iii) type-II seesaw/GeorgiMachacek model. In the first two class of models, this signature arises due to the presence of a singly-charged particle which has lifetime long enough to escape detection, while in the third model this signature originates resonantly from a doubly-charged particle produced along with two forward jets that, most likely, would escape detection. We analyze in great detail the discovery prospects of the signal in these three classes of models in the current as well as the upcoming runs of the LHC (such as HL-LHC and HE-LHC) by showing a distinction among these scenarios. ∗E-mail: [email protected] †E-mail: [email protected] ‡E-mail: [email protected] ar X iv :2 10 6. 03 88 8v 1 [ he pph ] 7 J un 2 02 1
In this study, the Empirical Orthogonal Function (EOF) analysis was accomplished on a long term m... more In this study, the Empirical Orthogonal Function (EOF) analysis was accomplished on a long term monthly Sea Surface Temperature (SST) data over the Bay of Bengal (BOB) through the Singular Value Decomposition (SVD) method. Monthly temperature data was obtained from the assimilation of recent ARGO observations into the Levitus Climatology using objective analysis technique. The aim of this study is divided into two categories : the intrinsicvaluable information obtained through EOF and reconstruction of the whole data from the dominant modes. Computational accuracy was calculated through skill analysis. Comparison between the original and reconstructed dataset revealed that EOF analysis extracts the small intrinsic signals and acts like a smoothing technique filtering out the unwanted signals. Reconstruction with five dominant modes is sufficient to express the basin dynamics for the BOB. Skill analysis revealed accuracy of reconstruction with respect to original SST in the range of ...
A certain class of new physics models includes long-lived particles which are singlet under the S... more A certain class of new physics models includes long-lived particles which are singlet under the Standard Model (SM) gauge group. A displaced vertex is a spectacular signature to probe such particles productions at the high energy colliders, with a negligible SM background. In the context of the minimal gauged B−L extended SM, we consider a pair creation of Majorana right-handed neutrinos (RHNs) at the high energy colliders through the production of the SM and the B − L Higgs bosons and their subsequent decays into RHNs. With parameters reproducing the neutrino oscillation data, we show that the RHNs are long-lived and their displaced vertex signature can be observed at the next generation displaced vertex search experiments, such as the HL-LHC, the MATHUSLA, the LHeC, and the FCC-eh. We find that the lifetime of the RHNs is controlled by the lightest light neutrino mass, which leads to a correlation between the displaced vertex search and the search limit of the future neutrinoless ...
A pressing environmental question facing the ocean is the potential impact of possible deep-sea m... more A pressing environmental question facing the ocean is the potential impact of possible deep-sea mining activities. This work presents our initial results in developing an ocean and plume modeling system for the Bismark Sea where deep sea mining operations will probably take place. We employ the MSEAS modeling system to both simulate the ocean and to downscale initial conditions from a global system (HYCOM) and tidal forcing from the global TPXO-8 Atlas. We found that at least 1.5 km resolution was needed to adequately resolve the multiscale flow fields. In St. Georges channel, the interaction between the tides, background currents, and underlying density fields increased the subtidal flows. Comparing to historical transport estimates, we showed that tidal forcing is needed to maintain the correct subtidal transport through that Channel. Comparisons with past simulations and measured currents all showed good agreement between the MSEAS hindcasts. Quantitative comparisons made between...
We present a simple extension of the Standard Model that leads to renormalizable long-range vecto... more We present a simple extension of the Standard Model that leads to renormalizable long-range vector-mediated neutrino self-interactions. This model can resolve the Hubble tension by delaying the onset of neutrino free-streaming during recombination, without conflicting with other measurements. The extended gauge, scalar and neutrino sectors lead to observable signatures, including invisible Higgs and Z decays, thereby relating the Hubble tension to precision measurements at the LHC and future colliders. The model has a new neutrinophilic gauge boson with m Z ∼ O(10 eV) and charged Higgses at a few 100 GeV. It requires hidden neutrinos with active-hidden mixing angles larger than 5 × 10 −4 and masses in the range 1 ÷ 300 eV, which could also play a role for short baseline neutrino oscillation anomalies.
We report the results of sea exercises that demonstrate the real-time capabilities of our fundame... more We report the results of sea exercises that demonstrate the real-time capabilities of our fundamental time-optimal path planning theory and software with real ocean vehicles. The exercises were conducted with REMUS 600 Autonomous Underwater Vehicles (AUVs) in the Buzzards Bay and Vineyard Sound Regions on 21 October and 6 December 2016. Two tests were completed: (i) 1-AUV time-optimal tests and (ii) 2-AUV race tests where one AUV followed a time-optimal path and the other a shortest-distance path between the start and finish locations. The time-optimal planning proceeded as follows. We first forecast, in real-time, the physical ocean conditions in the above regions and times utilizing our MSEAS multi-resolution primitive equation ocean modeling system. Next, we planned time-optimal paths for the AUVs using our level-set equations and real-time ocean forecasts, and accounting for operational constraints (e.g. minimum depth). This completed the planning computations performed onboard a research vessel. The forecast optimal paths were then transferred to the AUV operating system and the vehicles were piloted according to the plan. We found that the forecast currents and paths were accurate. In particular, the time-optimal vehicles won the races, even though the local currents and geometric constraints were complex. The details of the results were analyzed off-line after the sea tests.
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