Author
Amitava Raychaudhuri
Other affiliations: CERN, International Centre for Theoretical Physics, Oklahoma State University–Stillwater ...read more
Bio: Amitava Raychaudhuri is an academic researcher from University of Calcutta. The author has contributed to research in topics: Neutrino & Neutrino oscillation. The author has an hindex of 26, co-authored 116 publications receiving 2083 citations. Previous affiliations of Amitava Raychaudhuri include CERN & International Centre for Theoretical Physics.
Papers published on a yearly basis
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TL;DR: In this paper, the authors presented the physics potential of the ICAL detector as obtained from realistic detector simulations and gave the expected physics reach of the detector with 10 years of runtime.
Abstract: The upcoming 50 kt magnetized iron calorimeter (ICAL) detector at the India-based Neutrino Observatory (INO) is designed to study the atmospheric neutrinos and antineutrinos separately over a wide range of energies and path lengths. The primary focus of this experiment is to explore the Earth matter effects by observing the energy and zenith angle dependence of the atmospheric neutrinos in the multi-GeV range. This study will be crucial to address some of the outstanding issues in neutrino oscillation physics, including the fundamental issue of neutrino mass hierarchy. In this document, we present the physics potential of the detector as obtained from realistic detector simulations. We describe the simulation framework, the neutrino interactions in the detector, and the expected response of the detector to particles traversing it. The ICAL detector can determine the energy and direction of the muons to a high precision, and in addition, its sensitivity to multi-GeV hadrons increases its physics reach substantially. Its charge identification capability, and hence its ability to distinguish neutrinos from antineutrinos, makes it an efficient detector for determining the neutrino mass hierarchy. In this report, we outline the analyses carried out for the determination of neutrino mass hierarchy and precision measurements of atmospheric neutrino mixing parameters at ICAL, and give the expected physics reach of the detector with 10 years of runtime. We also explore the potential of ICAL for probing new physics scenarios like CPT violation and the presence of magnetic monopoles.
151 citations
Panjab University, Chandigarh1, University of Calicut2, Homi Bhabha National Institute3, Saha Institute of Nuclear Physics4, Bhabha Atomic Research Centre5, Indian Institute of Technology Madras6, Indian Institute of Technology Bombay7, University of Calcutta8, Tata Institute of Fundamental Research9, Harish-Chandra Research Institute10, University of Delhi11, University of Mysore12, Physical Research Laboratory13, University of Lucknow14, Aligarh Muslim University15, University of Kashmir16, Jawaharlal Nehru University17, Variable Energy Cyclotron Centre18, American College, Madurai19, Utkal University20, Banaras Hindu University21
TL;DR: In this paper, the authors presented the physics potential of the ICAL detector as obtained from realistic detector simulations and gave the expected physics reach of the detector with 10 years of runtime.
Abstract: The upcoming 50 kt magnetized iron calorimeter (ICAL) detector at the India-based Neutrino Observatory (INO) is designed to study the atmospheric neutrinos and antineutrinos separately over a wide range of energies and path lengths. The primary focus of this experiment is to explore the Earth matter effects by observing the energy and zenith angle dependence of the atmospheric neutrinos in the multi-GeV range. This study will be crucial to address some of the outstanding issues in neutrino oscillation physics, including the fundamental issue of neutrino mass hierarchy. In this document, we present the physics potential of the detector as obtained from realistic detector simulations. We describe the simulation framework, the neutrino interactions in the detector, and the expected response of the detector to particles traversing it. The ICAL detector can determine the energy and direction of the muons to a high precision, and in addition, its sensitivity to multi-GeV hadrons increases its physics reach substantially. Its charge identification capability, and hence its ability to distinguish neutrinos from antineutrinos, makes it an efficient detector for determining the neutrino mass hierarchy. In this report, we outline the analyses carried out for the determination of neutrino mass hierarchy and precision measurements of atmospheric neutrino mixing parameters at ICAL, and give the expected physics reach of the detector with 10 years of runtime. We also explore the potential of ICAL for probing new physics scenarios like CPT violation and the presence of magnetic monopoles.
116 citations
TL;DR: In this article, the authors studied the power law running of gauge, Yukawa and quartic scalar couplings in the universal extra dimension scenario where the extra dimension is accessed by all the standard model fields.
87 citations
CERN1
TL;DR: In this paper, the authors argue that CP-violation cannot be explained through the SUSY phase alone, and that SUSy graphs, especially with gluinos, can make important contributions to CP -violation through the Kobayashi-Maskawa phase.
80 citations
CERN1
TL;DR: In this paper, a comprehensive study of CP-violating effects in low-energy softly broken supersymmetric theories is presented, and it is shown that gluino exchange contributions to CP violation arising from the Kobayashi-Maskawa mixing matrix may provide indirect evidence of supersymmetry at low energy.
73 citations
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15 May 2003TL;DR: In this article, the authors present a list of the top five most important categories of defense: 1. GRAVITY 7. MICROSCOPIC PHYSICS 13.2.
Abstract: 2. GRAVITY 7. MICROSCOPIC PHYSICS 13. TOPOLOGY OF DEFECTS 18. ANOMALOUS NON-CONSERVATION OF FERMIONIC CHARGE 22. EDGE STATES AND FERMION ZERO MODES ON SOLITON 26. LANDAU CRITICAL VELOCITY 29. CASIMIR EFFECT AND VACUUM ENERGY
2,450 citations
01 Apr 2003
TL;DR: In this paper, the authors measured the flux of neutrino from distant nuclear reactors and found fewer nu;(e) events than expected from standard assumptions about nu; (e) propagation at the 99.95% C.L.yr exposure.
Abstract: KamLAND has measured the flux of nu;(e)'s from distant nuclear reactors. We find fewer nu;(e) events than expected from standard assumptions about nu;(e) propagation at the 99.95% C.L. In a 162 ton.yr exposure the ratio of the observed inverse beta-decay events to the expected number without nu;(e) disappearance is 0.611+/-0.085(stat)+/-0.041(syst) for nu;(e) energies >3.4 MeV. In the context of two-flavor neutrino oscillations with CPT invariance, all solutions to the solar neutrino problem except for the "large mixing angle" region are excluded.
1,659 citations
TL;DR: In this article, the full set of constraints on gluino and photino-mediated SUSY contributions to FCNC and CP violating phenomena are analyzed and a model-independent parameterization for the mass insertion method is provided.
1,106 citations
TL;DR: Theoretical and phenomenological implications of R-parity violation in supersymmetric theories are discussed in the context of particle physics and cosmology in this paper, including the relation with continuous and discrete symmetries.
949 citations
TL;DR: In this article, the properties of Higgs bosons in a class of supersymmetric theories are described and Feynman rules for their couplings to the gauge bosons, fermions and scalars of the theory are presented.
855 citations