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12 papers · 2 filters
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…
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…
Three-Neutrino Mass Matrices with Two Texture Zeros
Bipin R. Desai, D. P. Roy, Alexander R. Vaucher
Out of the fifteen 3 x 3 neutrino mass matrices with two texture zeros seven are compatible with the neutrino oscillation data. While 2 of them correspond to hierarchical neutrino…
Mechanisms of Supersymmetry Breaking in the MSSM
Probir Roy
Preliminary Remarks. Gauge mediated supersymmetry breaking. Gravity mediated supersymmetry breaking. Anomaly mediated supersymmetry breaking. Gaugino mediated supersymmetry breakin…
Heavy Triplet Leptons and New Gauge Boson
Ernest Ma, D. P. Roy
A heavy triplet of leptons per family is proposed as the possible anchor of a small seesaw neutrino mass. A new U(1) gauge symmetry is then also possible, and t…
The -polarisation test for the signal at the LHC
S. Moretti, D. P. Roy
The correlation between the two -polarisations is predicted to be opposite for the signal, while it corresponds to the same sign combinations for the…
Using Tau Polarization as a Distinctive SUGRA Signature at LHC
Monoranjan Guchait, D. P. Roy
In the minimal SUGRA model the lighter tau slepton is expected to be the second lightest superparticle over a large parameter range at large . Consequently one expects a via…
Implications of the first neutral current data from SNO for Solar Neutrino Oscillation
Abhijit Bandyopadhyay, Sandhya Choubey, Srubabati Goswami +1
We perform model independent and model dependent analyses of solar neutrino data including the neutral current event rate from SNO. The inclusion of the first SNO NC data in the mo…
Bi-maximal mixing and Bilinear R violation
Anjan S. Joshipura, Rishikesh D. Vaidya, Sudhir K. Vempati
We perform a general analytic study of feasibility of obtaining a combined explanation for the deficits in the solar and the atmospheric neutrino fluxes with two large mixing angle…
What can the SNO Neutral Current Rate teach us about the Solar Neutrino Anomaly
Abhijit Bandyopadhyay, Sandhya Choubey, Srubabati Goswami +1
We investigate how the anticipated neutral current rate from will sharpen our understanding of the solar neutrino anomaly. Quantitative analyses are performed with representa…
Theoretical Status of Muon (g-2)
Utpal Chattopadhyay, Achille Corsetti, Pran Nath
The theoretical status of the muon anomaly is reviewed including the recent change in the light by light hadronic correction. Specific attention is given to the implications of the…