Search For A Heavy Top Like Quark In P Bar P Collisions At Surd S
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Search For A Heavy Top Like Quark In P Bar P Collisions At Surd S
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Author :
language : en
Publisher:
Release Date : 2011
Search For A Heavy Top Like Quark In P Bar P Collisions At Surd 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 2011 with categories.
We present the results of a search for pair production of a heavy top-like (t') quark decaying to W q final states using data corresponding to an integrated luminosity of 5.6 fb−1 collected by the CDF II detector in p{anti p} collisions at √{ovr s} = 1.96 TeV. We perform parallel searches for t' → W b and t' → W q (where q is a generic down-type quark) in events containing a lepton and four or more jets. By performing a fit to the two-dimensional distribution of total transverse energy versus reconstructed t' quark mass, we set upper limits on the t'{anti t}' production cross section and exclude a standard model fourth-generation t' quark decaying to W b (W q) with mass below 358 (340) GeV/c2 at 95% CL.
Science Citation Index
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Author :
language : en
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Release Date : 1995
Science Citation Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Science categories.
Vols. for 1964- have guides and journal lists.
Search For A Heavy Particle Decaying To A Top Quark And A Light Quark In P Bar P Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2012
Search For A Heavy Particle Decaying To A Top Quark And A Light Quark 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 2012 with categories.
We present a search for a new heavy particle M produced in association with a top quark, p{bar p} → t(M → {bar t}q) or p{bar p} → {bar t}({bar M} → t{bar q}), where q stands for up quarks and down quarks. Such a particle may explain the recent anomalous measurements of top-quark forward-backward asymmetry. If the light-flavor quark (q) is reconstructed as a jet (j), this gives a {bar t}+j or t+j resonance in t{bar t}+jet events, a previously unexplored experimental signature. In a sample of events with exactly one lepton, missing transverse momentum and at least five jets, corresponding to an integrated luminosity of 8.7 fb−1 collected by the CDF II detector, we find the data to be consistent with the standard model. We set cross-section upper limits on the production (p{bar p} → Mt or {bar M} {bar t}) at 95% confidence level from 0.61 pb to 0.02 pb for M masses ranging from 200 GeV/c2 to 800 GeV/c2, respectively.
Search For A Heavy Bottom Like Quark In Pp Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2011
Search For A Heavy Bottom Like Quark 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 2011 with categories.
A search for pair-produced bottom-like quarks in pp collisions at sqrt(s) = 7 TeV is conducted with the CMS experiment at the LHC. The decay b' to tW is considered in this search. The b' b'-bar to tW-̂ t-bar W+̂ process can be identified by the distinctive signature of trileptons and same-sign dileptons. With a data sample corresponding to an integrated luminosity of 34 inverse picobarns, no excess above the standard model background predictions is observed and a b' quark with a mass between 255 and 361 GeV/c2̂ is excluded at the 95% confidence level.
Search For A Heavy Top Like Quark In Pp Collisions At Square Root S
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Author : David J. Cox
language : en
Publisher:
Release Date : 2012
Search For A Heavy Top Like Quark In Pp Collisions At Square Root S written by David J. Cox and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
We present the results of a search for pair production of a heavy top-like (t') quark decaying to Wq final states using data corresponding to an integrated luminosity of 5.6 fb−1 collected by the CDF II detector in proton-antiproton collisions at [square root s] = 1.96 TeV center of mass energy. A searche for t' --> Wb in events containing a lepton and four or more jets is conducted. By performing a fit to the two-dimensional distribution of total transverse energy versus reconstructed t' quark mass, we set upper limits on the t't̄' pair production cross section and exclude a standard model fourth-generation t' quark decaying to Wb with mass below 358 GeV/c2 at 95% CL.
Top Physics Search For Electroweak Single Top Quark Production In P Anti P Collisions At S 1 2
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Author :
language : en
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Release Date : 2005
Top Physics Search For Electroweak Single Top Quark Production In P Anti P Collisions At S 1 2 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
We report on a search for Standard Model t-channel and s-channel single top quark production in p{bar p} collisions at a center of mass energy of 1.96 TeV. We use a data sample corresponding to 162 pb−1 recorded by the upgraded Collider Detector at Fermilab. We find no significant evidence for electroweak top quark production and set upper limits at the 95% confidence level on the production cross section, consistent with the Standard Model: 10.1 pb for the t-channel, 13.6 pb for the s-channel and 17.8 pb for the combined cross section of t- and s-channel.
Search For Scalar Top Quark Production In P Bar P Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2012
Search For Scalar Top Quark Production 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 2012 with categories.
We report on a search for the supersymmetric partner of the top quark (scalar top) decaying into a charm quark and a neutralino in p{bar p} collisions at √s = 1.96 TeV. The data sample, collected by the CDF II detector at the Fermilab Tevatron, corresponds to an integrated luminosity of 2.6 fb−1. Candidate events are selected by requiring two or more jets and a large imbalance in the transverse momentum. To enhance the analysis sensitivity, at least one of the jets is required to be identified as originating from a charm quark using an algorithm specifically designed for this analysis. The selected events are in good agreement with standard model predictions. In the case of large mass splitting between the scalar top quark and the neutralino we exclude a scalar top quark mass below 180 GeV/c2 at 95% confidence level.
Evidence For S Channel Single Top Quark Production In P Bar P Collisions At Sqrt S
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Author :
language : en
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Release Date : 2013
Evidence For S Channel Single Top Quark Production 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 2013 with categories.
Search For The Top Quark Decaying To A Charged Higgs Boson In Bar P P Collisons At Sqrt S
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Author :
language : en
Publisher:
Release Date : 1994
Search For The Top Quark Decaying To A Charged Higgs Boson In Bar P P Collisons 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 1994 with categories.
This paper presents the results of a search in $\bar{p}$ collisions at √s = 1.8 TeV for the toop quark decaying to a charged Higgs boson (H±).
Top Quark Search In The Dilepton Channel In 1 8 Tev Proton Anti Proton Collisions
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Author :
language : en
Publisher:
Release Date : 1994
Top Quark Search In The Dilepton Channel In 1 8 Tev Proton Anti Proton Collisions written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.
A search for the top quark (t) in p$\bar{p}$ collisions at √s = 1.8 TeV is described. We consider the t$\bar{t }$ pairs, followed by semileptonoic decays via real w bosons: t$\bar{t }$ → W+b W-$\bar{b}$ l1l2X, where l1 and l2 are electrons and muons.