Search For Flavor Changing Neutral Current Decays Of The Top Quark In P Anti P Collisions At Square Root S
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Upper Limits On Rare Decays Of The Top Quark Using Jet Flavor Tagging In P Roton Anti P Roton Collisions At Square Root Of S
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Author : David Scott Wolinski
language : en
Publisher:
Release Date : 2001
Upper Limits On Rare Decays Of The Top Quark Using Jet Flavor Tagging In P Roton Anti P Roton Collisions At Square Root Of S written by David Scott Wolinski and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
Search For Flavor Changing Neutral Current Decays Of The Top Quark In P Anti P Collisions At Square Root S
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Author :
language : en
Publisher:
Release Date : 1997
Search For Flavor Changing Neutral Current Decays Of The Top Quark In P Anti P Collisions At Square Root S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
Physics Briefs
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Author :
language : en
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Release Date : 1983
Physics Briefs written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Physics categories.
Search For The Flavor Changing Neutral Current Decay T To Zq In P Bar P Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2008
Search For The Flavor Changing Neutral Current Decay T To Zq In P Bar P Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
We report a search for the flavor changing neutral current (FCNC) decay of the top quark t → Zq (q = u, c) in p{bar p} collisions at √s = 1.96 TeV using a data sample corresponding to an integrated luminosity of 1.9 fb−1 collected by the CDF II detector. This decay is strongly suppressed in the standard model (SM) and a signal at the Tevatron would be an indication of physics beyond the SM. Using Z+ ≥ 4 jet final state candidate events, both with and without an identified bottom quark jet, we discriminate signal from background by exploring kinematic constraints present in FCNC events and obtain an upper limit of [Beta](t → Zq)
Search For The Flavor Changing Neutral Current Decay T Rightarrow Qz In P Overline P Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2007
Search For The Flavor Changing Neutral Current Decay T Rightarrow Qz In P Overline P Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
This dissertation presents a blind search for the flavor changing neutral current decay of the top quark t → qZ in pp collisions at [special characters omitted] = 1.96TeV using a data sample corresponding to an integrated luminosity of 1.12 fb-1 collected by the Collider Detector at Fermilab (CDF), This decay is extremely rare in the standard model, and a signal at the Tevatron would be an indication of new physics. Dividing candidate events with a Z boson and four or more jets into a sample of those which have a heavy flavor jet identified by a secondary vertex algorithm and those which do not, we observe data yields consistent with background expectations. We set a 95% C.L. upper limit on the branching fraction B (t → qZ) of 11.3%, consistent with an expected upper limit of 7.8% ± 3.3%.
Oechslin Oscar
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language : en
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Oechslin Oscar written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Zeitungsausschnitte.
Searches For Flavor Changing Neutral Currents And Single Top Quarks At
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Author :
language : en
Publisher:
Release Date : 2008
Searches For Flavor Changing Neutral Currents And Single Top Quarks At written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
I present brief descriptions of two top quark analyses performed using D0 data from p{bar p} collisions at (square root)s = 1.96 TeV: the search for flavor-changing neutral-current couplings (FCNC) of the top quark with a charm or an up quark with the exchange of a gluon, and the search for the standard model production of single top quarks. The search for FCNC couplings of a gluon to the top quark is the first such analysis at hadron colliders. I describe the application of the Bayesian approach for comparing our physics models to the observed data in both analyses and, in one of them, to separate small signals from large backgrounds.
Search For Flavor Changing Neutral Currents In Top Quark Decays T To Zq In Pp Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2013
Search For Flavor Changing Neutral Currents In Top Quark Decays T To Zq In Pp Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
Search For Top Decays Through Flavor Changing Neutral Current Process T Z Q In Pp Collisions At Square Root S
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Author : 李昀翰
language : en
Publisher:
Release Date : 2013
Search For Top Decays Through Flavor Changing Neutral Current Process T Z Q In Pp Collisions At Square Root S written by 李昀翰 and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
Search For The Flavor Changing Neutral Current Decay T Z Q At Sqrt S
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Author :
language : en
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Release Date : 2009
Search For The Flavor Changing Neutral Current Decay T Z Q At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
This thesis reports the results of a search for the flavor changing neutral current decay of the top quark, t → Zq, in decays of t{bar t} pairs produced in p{bar p} collisions at a center-of-mass energy of 1.96 TeV. This search is performed on a data sample recorded by the Collider Detector at Fermilab (CDF), corresponding to an integrated luminosity of 1.9 fb−1. This search follows a previous CDF analysis that resulted in an upper limit for the branching fraction [Beta](t → Zq) of 10.4% at 95% C.L. using a dataset equivalent to 1.1 fb−1 of integrated luminosity. This thesis extends to 1.9 fb−1 of data, and has improved sensitivity to the small signal with the introduction of a template fit technique that includes systematic uncertainties by a linear interpolation between templates. Using a Feldman-Cousins construction, an upper limit at 95% C.L. is set on [Beta](t → Zq) of 3.7%, with the expected upper limit in absence of a signal is 5.0 ± 2.2% for a top mass of 175 GeV/c2.