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154 papers · 1 filter
Study of Decays
The Belle Collaboration, A. Satpathy
We report on a study of decays using 29.1 fb of annihilation data recorded at the resonance with the Belle detector…
Boundedness results for periodic points on algebraic varieties
Najmuddin Fakhruddin
We prove that if f is a self-map of an algebraic variety over a field K, then under certain conditions on X, f and K the set of possible periods of K-valued periodic points of f is…
Irreducible representations for Toroidal Lie algebras
S. Eswara Rao
We study irreducible modules for Toroidal Lie-algebras with finite dimensional weight spaces. First note that Toroidal Lie-algebras have infinite dimensional center. In genaral the…
Fast Transition between High-soft and Low-soft States in GRS 1915+105: Evidence for a Critically Viscous Accretion Flow
S. Naik, A. R. Rao, Sandip K. Chakrabarti
We present the results of a detailed analysis of RXTE observations of class which show an unusual state transition between high-soft and low-soft states in the microquasar GRS…
On Variation of the Latitudinal Structure of the Solar Convection Zone
H. M. Antia, S. M. Chitre, M. J. Thompson
The latitudinal sound-speed structure of the Sun's convection zone gives insight into the physical processes occurring there, specifically the cellular convection and possibly the…
The Solar Neutrino Problem after the first results from Kamland
Abhijit Bandyopadhyay, Sandhya Choubey, Raj Gandhi +2
The first results from the KamLAND experiment have provided confirmational evidence for the Large Mixing Angle (LMA) MSW solution to the solar neutrino problem. We do a global anal…
Studies of B0-B0bar Mixing Properties with Inclusive Dilepton Events
N. C. Hastings
We report a precise determination of the B0-B0bar mixing parameter Delta-m_d based on the time evolution of same-sign and opposite-sign dilepton yields in Upsilon(4S) decays. Data…
Spherical Dust Collapse in Higher Dimensions
Rituparno Goswami, Pankaj S Joshi
We consider here the question if it is possible to recover cosmic censorship when a transition is made to higher dimensional spacetimes, by studying the spherically symmetric dust…
Measurement of the mixing rate with partial reconstruction
Y. Zheng, T. E. Browder
We report a measurement of the mixing parameter based on a sample of resonance decays collected by the Belle detector at the KEKB…
ESR investigation of the spin dynamics in (Gd_{1-x}Y_{x})_2PdSi_{3}
J. Deisenhofer, H. -A. Krug von Nidda, A. Loidl +1
We report electron-spin resonance measurements in polycrystalline samples of (Gd_{1-x}Y_{x})_2PdSi_{3}. We observe the onset of a broadening of the linewidth and of a decrease of t…
Spectral properties of the X-ray binary pulsar LMC X-4 during different intensity states
S. Naik, B. Paul
We present spectral variations of the binary X-ray pulsar LMC X-4 observed with the RXTE/PCA during different phases of its 30.5 day long third period. Only out of eclipse data wer…
Changes in Solar Dynamics from 1995 to 2002
Sarbani Basu, H. M. Antia
Data obtained by the GONG and MDI instruments over the last seven years are used to study how solar dynamics -- both rotation and other large scale flows -- have changed with time.…
Microflares in accretion disks
V. Krishan, S. Ramadurai, P. J. Wiita
We have investigated the phenomenon of explosive chromospheric evaporation from an accretion disk as a mechanism for fast variability in accreting sources such as low mass X-ray bi…
New Supersymmetric String Compactifications
Shamit Kachru, Michael B. Schulz, Prasanta K. Tripathy +1
We describe a new class of supersymmetric string compactifications to 4d Minkowski space. These solutions involve type II strings propagating on (orientifolds of) non Calabi-Yau sp…
Measurement of Branching Fractions and Charge Asymmetries for Two-Body B Meson Decays with Charmonium
Belle Collaboration
We report branching fractions and charge asymmetries for exclusive decays of charged and neutral B mesons to two-body final states containing a charmonium meson, J/psi or psi(2S).…
Far and mid infrared observations of two ultracompact H II regions and one compact CO clump
R. P. Verma, S. K. Ghosh, B. Mookerjea +1
Two ultracompact H II regions (IRAS 19181+1349 and 20178+4046) and one compact molecular clump (20286+4105) have been observed at far infrared wavelengths using the TIFR 1 m balloo…
The Correlation between X-ray spectral slope and FeKalpha line energy in radio-quiet active galactic nuclei
Gulab Chand Dewangan
A significant correlation between FeKalpha line energy and X-ray spectral slope has been discovered among radio-quiet active galactic nuclei. The ionization stage of the bulk of th…
Valence quarks in the QCD plasma: quark number susceptibilities and screening
Rajiv V. Gavai, Sourendu Gupta
We have investigated the quark sector of quenched QCD for 1.5\le T/Tc\le3 in the continuum limit, using two different lattice discretisations of quarks and extrapolating from latti…
Finiteness of Selmer groups and deformation rings
Chandrashekhar Khare, Ravi Ramakrishna
We prove the finiteness of Selmer groups attached to lifts of certain 2-dimensional mod p representations of the absolute Galois group of Q. The mod p representation can be either…
On isomorphisms between deformation rings and Hecke rings
Chandrashekhar Khare
We give a different approach to the well-known modularity lifting results of Wiles and Taylor. Instead of Taylor-Wiles systems we use a Galois cohomological discovery of R. Ramakri…
Reduction of homomorphisms mod p and algebraicity
Chandrashekhar Khare, Dipendra Prasad
{Let be a number field, and abelian varieties over . Let (resp. ) be a non-torsion point in (resp. ) such that for almost all places o…
Testing the solar LMA region with KamLAND data
Abhijit Bandyopadhyay, Sandhya Choubey, Raj Gandhi +2
We investigate the potential of 3 kiloTon-years(kTy) of KamLAND data to further constrain the and values compared to those presently allowed by existing KamLAND an…
Combined fits to the supersymmetric explanation of anomalous lepton-photon-missing E_T events
B. C. Allanach, K. Sridhar
The CDF experiment reported a lepton photon missing transverse energy (E_T) signal 3 sigma in excess of the Standard Model prediction in Tevatron Run I data. The excess can be expl…
X-ray and radio bright type Ic SN 2002ap -- a hypernova without an associated GRB
F. K. Sutaria, A. Ray, P. Chandra
Combined X-ray (0.3 -10 keV) and Radio (0.61 and 1.42 GHz) observations of the type Ic SN 2002ap are used here, to determine the origins of the prompt X-ray and Radio emission from…