455 citations · 4.4k across the 80 of their papers we have counts for
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Big Bang Nucleosynthesis in the presence of sterile neutrinos with altered dispersion relations
Elke Aeikens, Heinrich Päs, Sandip Pakvasa +1
Big Bang Nucleosynthesis imposes stringent bounds on light sterile neutrinos mixing with the active flavors. Here we discuss how altered dispersion relations can weaken such bounds…
Light Sterile Neutrinos, Lepton Number Violating Interactions and the LSND Anomaly
K. S. Babu, Douglas W. McKay, Irina Mocioiu +1
We develop the consequences of introducing a purely leptonic, lepton number violating non-standard interaction (NSI) and standard model neutrino mixing with a fourth, sterile neutr…
Lorentz Invariance Violation and IceCube Neutrino Events
Gaurav Tomar, Subhendra Mohanty, Sandip Pakvasa
The IceCube neutrino spectrum shows a flux which falls of as for sub PeV energies but there are no neutrino events observed above PeV. In particular the Glashow r…
Nonstandard Higgs decays in the E6 inspired SUSY models
R. Nevzorov, S. Pakvasa
We consider the exotic decays of the SM-like Higgs state within the E6 inspired supersymmetric (SUSY) models. In these models the lightest SUSY particle (LSP) can be substantially…
Flavor ratios of extragalactical neutrinos and neutrino shortcuts in extra dimensions
Elke Aeikens, Heinrich Päs, Sandip Pakvasa +1
The recent measurement of high energy extragalactic neutrinos by the IceCube Collaboration has opened a new window to probe non-standard neutrino properties. Among other effects, s…
A new technique to observe direct CP Violation in D mesons using Bose Symmetry and Dalitz Plot
Dibyakrupa Sahoo, Rahul Sinha, N. G. Deshpande +1
We present a new and sensitive method to observe direct CP violation in mesons using Bose symmetry and Dalitz plot. We apply the method to processes such as $B \to D^0\bar{D}^0…
Pseudo-Dirac neutrinos via mirror-world and depletion of UHE neutrinos
Anjan S. Joshipura, Subhendra Mohanty, Sandip Pakvasa
We propose a possible particle physics explanation of the non-observation of muon neutrino events at IceCube coincident with GRB gamma ray at the rates predicted by the standard Ba…
Explanation for the low flux of high energy astrophysical muon-neutrinos
Sandip Pakvasa, Anjan Joshipura, Subhendra Mohanty
We consider the possibility that some exotic neutrino property is responsible for reducing the muon neutrino flux at high energies from distant neutrino sources; specifically, we c…
Light Sterile Neutrinos: A White Paper
K. N. Abazajian, M. A. Acero, S. K. Agarwalla +184
This white paper addresses the hypothesis of light sterile neutrinos based on recent anomalies observed in neutrino experiments and the latest astrophysical data.
Determination of Weak Amplitudes using Bose Symmetry and Dalitz Plots
Rahul Sinha, N. G. Deshpande, Sandip Pakvasa +1
We present a new method using Dalitz plot and Bose symmetry of pions that allows the complete determination of the magnitudes and phases of weak decay amplitudes. We apply the meth…
Relating B_s Mixing and B_s -> mu+mu- with New Physics
Eugene Golowich, JoAnne Hewett, Sandip Pakvasa +2
We perform a study of the Standard Model (SM) fit to the mixing quantities , and in order to bound contributions of New Physics to mixing. We th…
Nonstandard Higgs decays in the E(6)SSM
J. P. Hall, S. F. King, R. Nevzorov +2
We study the nonstandard decays of the lightest Higgs state within the Exceptional Supersymmetric Standard Model (E6SSM). We argued that the SM--like Higgs boson can decay predomin…
Neutrino Flavor Detection at Neutrino Telescopes and Its Uses
Sandip Pakvasa
It is shown how high energy neutrino beams from very distant sources can be utilised to learn about many neutrino properties such as lifetimes, mass hierarchy, mixing, minuscule ps…
Relating D0-anti-D0 Mixing and D0 -> l+l- with New Physics
Eugene Golowich, JoAnne Hewett, Sandip Pakvasa +1
We point out how, in certain models, the same combination of New Physics couplings occur in the amplitudes for both D0-anti-D0 mixing and the rare decays D0 -> l+l-. If the New Phy…
Addressing μ-b_μand proton lifetime problems and active neutrino masses in a U(1)^\prime-extended supergravity model
R. S. Hundi, Sandip Pakvasa, Xerxes Tata
We present a locally supersymmetric extension of the minimal supersymmetric Standard Model (MSSM) based on the gauge group wh…
Prospects of neutrino oscillation measurements in the detection of reactor antineutrinos with a medium-baseline experiment
Mikhail Batygov, Stephen Dye, John Learned +3
Despite the dramatic progress made in neutrino oscillation studies recently, several fundamental neutrino parameters remain either unknown or poorly measured. We discuss in detail…
Neutrino Flavor Goniometry by High Energy Astrophysical Beams
Sandip Pakvasa
It is shown how high energy neutrino beams from very distant sources can be utilized to learn about many properties of neutrinos such as lifetimes, mass hierarchy, mixing, minuscul…
Unparticle Induced Baryon Number Violating Nucleon Decays
Xiao-Gang He, Sandip Pakvasa
We study baryon number violating nucleon decays induced by unparticle interactions with the standard model particles. We find that the lowest dimension operators which cause nucleo…
Flavor Ratios of Astrophysical Neutrinos: Implications for Precision Measurements
Sandip Pakvasa, Werner Rodejohann, Thomas J. Weiler
We discuss flavor-mixing probabilities and flavor ratios of high energy astrophysical neutrinos. In the first part of this paper, we expand the neutrino flavor-fluxes in terms of t…
TriMinimal Parametrization of the Neutrino Mixing Matrix
Sandip Pakvasa, Werner Rodejohann, Thomas J. Weiler
Current experimental data on neutrino mixing are very well described by TriBiMaximal mixing. Accordingly, any phenomenological parametrization of the MNSP matrix must build upon Tr…
Neutrino time travel
James Dent, Heinrich Päs, Sandip Pakvasa +1
We discuss causality properties of extra-dimensional theories allowing for effectively superluminal bulk shortcuts. Such shortcuts for sterile neutrinos have been discussed as a so…
Accurate measurement of the D0-D0bar mixing parameters
Nita Sinha, Rahul Sinha, T. E. Browder +2
We propose a new method to determine the mass and width differences of the two D meson mass-eigenstates as well as the CP violating parameters associated with D^0-\bar{D}^0 mixing.…
Implications of D^0-\bar D^0 Mixing for New Physics
Eugene Golowich, JoAnne Hewett, Sandip Pakvasa +1
We provide a comprehensive, up-to-date analysis of possible New Physics contributions to the mass difference in - mixing. We consider the most general low e…
Shortcuts in extra dimensions and neutrino physics
Heinrich Päs, Sandip Pakvasa, Thomas J. Weiler
We discuss the possibility of sterile neutrinos taking shortcuts in extra dimensions, and the consequences for neutrino oscillations. This effect influences the active-sterile neut…