Mondal, N. K. ; Roy, D. P. (1994) An effective pT cutoff for the isolated lepton background from bottom quark decay Physical Review D - Particles, Fields, Gravitation and Cosmology, 49 (1). pp. 183-189. ISSN 1550-7998
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Official URL: http://prd.aps.org/abstract/PRD/v49/i1/p183_1
Related URL: http://dx.doi.org/10.1103/PhysRevD.49.183
Abstract
There is a strong correlation between the pT and isolation of the lepton coming from B decay. Consequently the isolated lepton background from B decay goes down rapidly with increasing lepton pT and there is a pT cutoff beyond which it effectively vanishes. For the isolation cut of ETAC<10 GeV, appropriate for the CERN Large Hadron Collider (LHC), the lepton pT cutoff is 80 GeV. This can be exploited to effectively eliminate the B background from the like-sign dilepton channel appropriate for Majorana particle searches, as well as the unlike-sign dilepton and the single lepton channels appropriate for the top quark search. We illustrate this with a detailed analysis of the B background in these channels along with the signals at LHC energy using both parton level Monte Carlo and isaget programs. Similar results are expected to hold at the Superconducting Super Collider energy as well.
Item Type: | Article |
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Source: | Copyright of this article belongs to The American Physical Society. |
ID Code: | 87266 |
Deposited On: | 16 Mar 2012 11:23 |
Last Modified: | 17 Jul 2012 04:16 |
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