Search for Supersymmetry Using Rare B(s) --] Mu+ Mu- Decays at CDF Run II. PDF Download
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Author: Vyacheslav E. Krutelyov Publisher: ISBN: Category : Languages : en Pages : 219
Book Description
A search for rare B$0\atop{s}$ → [mu]+[mu]- and B$0\atop{d}$ → [mu]+[mu]- decays has been performed in pp collisions at √s = 1.96 TeV using 364 pb-1 of data collected by the CDF II experiment at the Fermilab Tevatron Collider. The rate of each decay is sensitive to contributions from physics beyond the Standard Model (SM). No events pass the optimized selection requirements, consistent with the SM expectation. The resulting upper limits on the branching ratios are B(B$0\atop{s}$ → [mu]+[mu]-)
Author: Vyacheslav E. Krutelyov Publisher: ISBN: Category : Languages : en Pages : 219
Book Description
A search for rare B$0\atop{s}$ → [mu]+[mu]- and B$0\atop{d}$ → [mu]+[mu]- decays has been performed in pp collisions at √s = 1.96 TeV using 364 pb-1 of data collected by the CDF II experiment at the Fermilab Tevatron Collider. The rate of each decay is sensitive to contributions from physics beyond the Standard Model (SM). No events pass the optimized selection requirements, consistent with the SM expectation. The resulting upper limits on the branching ratios are B(B$0\atop{s}$ → [mu]+[mu]-)
Author: Vyacheslav Krutelyov Publisher: ISBN: Category : Languages : en Pages :
Book Description
A search for rare B0 [subscript]s to [mu][mu]− and B0 [subscript]d to [mu][mu]− decays has been performed in pp̄ collisions at [square root]s = 1.96 TeV using 364 pb−1 of data collected by the CDF II experiment at the Fermilab Tevatron Collider. The rate of each decay is sensitive to contributions from physics beyond the Standard Model (SM). No events pass the optimized selection requirements, consistent with the SM expectation. The resulting upper limits on the branching ratios are [beta](B0 [subscript]s to [mu]+[mu]−)
Author: Publisher: ISBN: Category : Languages : en Pages : 238
Book Description
A search for rare B$0top{s}$ → ?+?- and B$0top{d}$ → ?+?- decays has been performed in pp collisions at √s = 1.96 TeV using 364 pb-1 of data collected by the CDF II experiment at the Fermilab Tevatron Collider. The rate of each decay is sensitive to contributions from physics beyond the Standard Model (SM). No events pass the optimized selection requirements, consistent with the SM expectation. The resulting upper limits on the branching ratios are B(B$0top{s}$ → ?+?-) 1.5 × 10sup-7/sup and B(B$0top{d}$ → ?sup+/sup?sup-/sup) 3.8 × 10
Author: Robert David Forrest Publisher: ISBN: 9781267023490 Category : Languages : en Pages :
Book Description
This thesis presents the results a search for chargino and neutralino supersymmetric particles yielding same signed dilepton final states including one hadronically decaying tau lepton using 6.0 fb−1 of data collected by the the CDF II detector. This signature is important in SUSY models where, at high tan [beta], the branching ratio of charginos and neutralinos to tau leptons becomes dominant. We study event acceptance, lepton identification cuts, and efficiencies. We set limits on the production cross section as a function of SUSY particle mass for certain generic models.
Author: Publisher: ISBN: Category : Languages : en Pages : 127
Book Description
This thesis presents the results a search for chargino and neutralino supersymmetric particles yielding same signed dilepton final states including one hadronically decaying tau lepton using 6.0 fb-1 of data collected by the the CDF II detector. This signature is important in SUSY models where, at high tan ?, the branching ratio of charginos and neutralinos to tau leptons becomes dominant. We study event acceptance, lepton identification cuts, and efficiencies. We set limits on the production cross section as a function of SUSY particle mass for certain generic models.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The connection of rare decays to supersymmetric grand unification is highlighted, and a brief review of the status of rare decay experiments is given. The status of the MEGA experiment, a search for [mu][sup +] [yields] e[sup +][gamma], is reported. Some ideas for a new experimental arrangement that has the potential to reach a sensitivity of 10[sup [minus]14] are presented.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
We have conducted a search for trilepton events from supersymmetry (SUSY) in p[bar p] collisions at [radical]s = 1.8 TeV. In the Supersymmetric Standard Model (MSSM), trilepton events are expected from chargino-neutralino ([tilde [chi]][sub 1][sup [plus-minus]][tilde [chi]][sub 2][sup [minus]0]) pair production, with subsequent decay into leptons. In all possible combinations of electron and muon channels in 19 pb[sup [minus]1] data, we observe no events which pass our trilepton selection criteria. Employing the GUT hypothesis within the framework of the MSSM, our preliminary excludes M([tilde [chi]][sub 1][sup [plus-minus]])
Author: Publisher: ISBN: Category : Languages : en Pages : 27
Book Description
The authors present the results of the first hadron collider search for heavy, long-lived neutralinos that decay via {tilde {chi}}1° → [gamma]{tilde G} in gauge-mediated supersymmetry breaking models. Using an integrated luminosity of 570 ± 34 pb−1 of p{bar p} collisions at √s = 1.96 TeV, they select [gamma]+jet+missing transverse energy candidate events based on the arrival time of a high-energy photon at the electromagnetic calorimeter as measured with a timing system that was recently installed on the CDF II detector. They find 2 events, consistent with the background estimate of 1.3 ± 0.7 events. While the search strategy does not rely on model-specific dynamics, they set cross section limits and place the world-best 95% C.L. lower limit on the {tilde {chi}}1° mass of 101 GeV/c2 at [tau]{sub {tilde {chi}}1°} = 5 ns.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
A search for new long-lived particles decaying to leptons is presented using proton-proton collisions produced by the LHC at √s=8 TeV. Data used for the analysis were collected by the CMS detector and correspond to an integrated luminosity of 19.7 fb-1. Events are selected with an electron and muon with opposite charges that both have transverse impact parameter values between 0.02 and 2 cm. The search has been designed to be sensitive to a wide range of models with nonprompt e-[mu] final states. Limits are set on the "displaced supersymmetry" model, with pair production of top squarks decaying into an e-[mu] final state via R-parity-violating interactions. The results are the most restrictive to date on this model, with the most stringent limit being obtained for a top squark lifetime corresponding to c[tau]=2 cm, excluding masses below 790 GeV at 95% confidence level.
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Author: Vyacheslav E. Krutelyov![Search for Supersymmetry Using Rare B(s) --] Mu+ Mu- Decays at CDF Run II. PDF](https://books.google.com/books/content/images/frontcover/dghFAQAACAAJ?fife=w80-h100)
Author: Vyacheslav E. Krutelyov to [mu][mu]− Decays at CDF Run II PDF](https://books.google.com/books/content/images/frontcover/07TyjwEACAAJ?fife=w80-h100)
Author: Vyacheslav Krutelyov
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