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Constraining R-parity violating couplings using dimuon data at Tevatron Run-II | | Subhendu Chakrabarti
; Monoranjan Guchait
; N.K.Mondal
; | | Date: |
29 Apr 2004 | | Journal: | Phys.Lett. B600 (2004) 231-238 | | Subject: | hep-ph | | Abstract: | The dimuon plus dijet signal is analyzed in the top squark pair production at Tevatron Run-II experiment and the total event rate is compared with the existing dimuon data. This comparison rules out top squark mass upto 188(104) GeV for the branching fraction 100%(50%) of top squark decay into the muon plus quark via lepton number violating coupling. Interpretation of this limit in the framework of R-parity violating(RPV) SUSY model puts limit on relevant RPV coupling for a given top squark mass and other supersymmetric model parameters. If $MST lsim 180$ GeV we found that the RPV couplings are roughly restricted to be within $sim 10^{-4}$ which is at the same ballpark value obtained from the neutrino data. The limits are very stringent for a scenario where top squarks appear to be the next lightest supersymmetric particles. | | Source: | arXiv, hep-ph/0404261 | | Services: | Forum | Review | PDF | Favorites | |
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