arXiv subjects

G. Bhattacharya

Publications and source records attributed to G. Bhattacharya.

4 recordsLinked to original sources

arXiv1995

Photon and Z induced heavy charged lepton pair production at a hadron supercollider

We investigate the pair production of charged heavy leptons via photon-induced processes at the proposed CERN Large Hadron Collider (LHC). Using effective photon and Z approximations, rates are given for $L^+L^-$ production due to $γγ$ fusion and $Z γ$ fusion for the cases of inelastic, elastic and semi-elastic $pp$ collisions. These are compared with the corresponding rates for production via the gluon fusion and Drell-Yan mechanisms. Various $γγ$ and $Z γ$ differential luminosities for $pp$ collisions are also presented.

hep-ph↗

arXiv1995

Some constraints on neutral heavy leptons from flavor-conserving decays of the Z boson

Small neutrino masses can arise in some grand unified models or superstring theories. We consider a model with an enhanced fermion sector containing Dirac neutral heavy leptons. The dependence on the mass and mixing parameters of these new fermions is investigated for several measurable quantities. We study the flavor-conserving leptonic decays of the Z boson and universality breaking in these decays. We also consider the W boson mass dependence on neutral heavy lepton parameters.

hep-ph↗

arXiv1993

A Generalized Gauge Invariant Regularization of the Schwinger Model

The Schwinger model is studied with a new one - parameter class of gauge invariant regularizations that generalizes the usual point - splitting or Fujikawa schemes. The spectrum is found to be qualitatively unchanged, except for a limiting value of the regularizing parameter, where free fermions appear in the spectrum.

hep-th↗

arXiv1993

Heavy Charged Lepton Pair Production Through Photon Fusion at Hadron Supercolliders

The pair production of charged heavy leptons via two photon fusion is considered for hadron collisions at SSC and LHC energies. Rates for the inelastic process $pp \rightarrow γγX \rightarrow L^+L^-X$ and the elastic process $pp \rightarrow γγpp \rightarrow L^+L^- pp$ are given in a Weizsäcker-Williams approximation and compared with production via the gluon fusion and Drell-Yan mechanisms

hep-ph↗