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Search For Flavor Changing Neutral Currents In Single Top Quark Production Using 23 Fb 1 Of Pbarp Collisions
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Book Synopsis Search for Flavor Changing Neutral Currents in Single Top Quark Production Using 2.3 Fb$^-1$ of $p\bar{p}$ Collisions by :
Download or read book Search for Flavor Changing Neutral Currents in Single Top Quark Production Using 2.3 Fb$^-1$ of $p\bar{p}$ Collisions written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a search for flavor changing neutral currents via quark-gluon couplings in a sample of single top quark final states corresponding to 2.3 fb−1 of integrated luminosity collected with the D0 detector at the Fermilab Tevatron Collider. We select events containing a single top quark candidates with an additional jet, and obtain separation between signal and background using Bayesian neural networks. We find consistency between background expectation and observed data, and set limits on avor changing neutral current gluon couplings of the top quark to up quarks (tgu) and charm quarks (tgc). The cross section limits at the 95% C.L. are [sigma]{sub tgu}
Book Synopsis Searches for Flavor-changing Neutral Currents and Single Top Quarks at by :
Download or read book Searches for Flavor-changing Neutral Currents and Single Top Quarks at written by and published by . This book was released on 2008 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis A Search for Flavour Changing Neutral Currents in Top-quark Decays in Pp Collision Data Collected with the ATLAS Detector at √s by :
Download or read book A Search for Flavour Changing Neutral Currents in Top-quark Decays in Pp Collision Data Collected with the ATLAS Detector at √s written by and published by . This book was released on 2014 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for flavour changing neutral current (FCNC) processes in top-quark decays by the ATLAS Collaboration is presented. Data collected from pp collisions at the LHC at a centre-of-mass energy of √s = 7 TeV during 2011, corresponding to an integrated luminosity of 2.1 fb−1, were used. A search was performed for top-quark pair-production events, with one top quark decaying through the t → Zq FCNC (q = u, c) channel, and the other through the Standard Model dominant mode t → Wb. Only the decays of the Z boson to charged leptons and leptonic W-boson decays were considered as signal. Consequently, the final-state topology is characterised by the presence of three isolated charged leptons, at least two jets and missing transverse momentum from the undetected neutrino. No evidence for an FCNC signal was found. An upper limit on the t → Zq branching ratio of BR(t → Zq)
Book Synopsis A Search for Flavour Changing Neutral Currents in Top-quark Decays in Pp Collision Data Collected with the ATLAS Detector at {u221A}s by :
Download or read book A Search for Flavour Changing Neutral Currents in Top-quark Decays in Pp Collision Data Collected with the ATLAS Detector at {u221A}s written by and published by . This book was released on 2012 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for flavour changing neutral current (FCNC) processes in top-quark decays by the ATLAS Collaboration is presented. Data collected from pp collisions at the LHC at a centre-of-mass energy of √s = 7 TeV during 2011, corresponding to an integrated luminosity of 2.1 fb−1, were used. A search was performed for top-quark pair-production events, with one top quark decaying through the t → Zq FCNC (q = u, c) channel, and the other through the Standard Model dominant mode t → Wb. Only the decays of the Z boson to charged leptons and leptonic W-boson decays were considered as signal. Consequently, the final-state topology is characterised by the presence of three isolated charged leptons, at least two jets and missing transverse momentum from the undetected neutrino. No evidence for an FCNC signal was found. An upper limit on the t → Zq branching ratio of BR(t → Zq)
Book Synopsis Search for Flavor Changing Neutral Currents in Top Quark Decays Using a Two-leptons+track Selection by :
Download or read book Search for Flavor Changing Neutral Currents in Top Quark Decays Using a Two-leptons+track Selection written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for the Flavor Changing Neutral Current Decay T $\to Zq$ in $p \bar{p}$ Collisions at $\sqrt{s} by :
Download or read book Search for the Flavor Changing Neutral Current Decay T $\to Zq$ in $p \bar{p}$ Collisions at $\sqrt{s} written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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)
Book Synopsis Erratum To: Search for Single Top-quark Production Via Flavour-changing Neutral Currents at 8 TeV with the ATLAS Detector by : [Study Group] ATLAS Collaboration CERN
Download or read book Erratum To: Search for Single Top-quark Production Via Flavour-changing Neutral Currents at 8 TeV with the ATLAS Detector written by [Study Group] ATLAS Collaboration CERN and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Flavor-Changing Neutral Current Top Quark Decays t → Hq, with H → bb̅ , in pp Collisions at √s = 8 TeV with the ATLAS Detector by : Shota Tsiskaridze
Download or read book Search for Flavor-Changing Neutral Current Top Quark Decays t → Hq, with H → bb̅ , in pp Collisions at √s = 8 TeV with the ATLAS Detector written by Shota Tsiskaridze and published by Springer. This book was released on 2017-08-11 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: This PhD thesis focuses on the search for flavor-changing neutral currents in the decay of a top quark to an up-type quark (q = u, c) and the Standard Model Higgs boson, where the Higgs boson decays to bb. Further, the thesis presents the combination of this search for top quark pair events with other ATLAS searches – in the course of which the most restrictive bounds to date on tqH interactions were obtained. Following on from the discovery of the Higgs boson, it is particularly important to measure the Yukawa couplings of the Standard Model fermions; these parameters may provide crucial insights to help solve the flavor puzzle and may help reveal the presence of new physics before it is directly observed in experiments.
Book Synopsis Search for Single Top-quark Production Via Flavour-changing Neutral Currents in Strong Interactions Using [Wurzel]s by : Conrad Friedrich
Download or read book Search for Single Top-quark Production Via Flavour-changing Neutral Currents in Strong Interactions Using [Wurzel]s written by Conrad Friedrich and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for the Flavor Changing Neutral Current Decay $t\rightarrow QZ$ in $p\overline{p}$ Collisions at $\sqrt{s}$ by :
Download or read book Search for the Flavor Changing Neutral Current Decay $t\rightarrow QZ$ in $p\overline{p}$ Collisions at $\sqrt{s}$ written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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%.
Book Synopsis A Search for Single Top-quark Production and Flavour-changing Neutral-current Interactions at H1 by : John James Kennedy
Download or read book A Search for Single Top-quark Production and Flavour-changing Neutral-current Interactions at H1 written by John James Kennedy and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oechslin Oscar (?-?). written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Zeitungsausschnitte.
Book Synopsis Search for Flavor-changing Neutral Current Top Quark Decays T - Hq, with H - Bb, in Pp Collisions at [square Root Of] 2 by : Shota Tsiskaridze
Download or read book Search for Flavor-changing Neutral Current Top Quark Decays T - Hq, with H - Bb, in Pp Collisions at [square Root Of] 2 written by Shota Tsiskaridze and published by . This book was released on 2015 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Flavor Changing Neutral Current Decays of the Top Quark in P {anti P} Collisions at (square Root) S by :
Download or read book Search for Flavor Changing Neutral Current Decays of the Top Quark in P {anti P} Collisions at (square Root) S written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Search for Flavor Changing Neutral Current Decays of the Top Quark in Pp Collisions at /s by : Robin Lovelace Coxe
Download or read book A Search for Flavor Changing Neutral Current Decays of the Top Quark in Pp Collisions at /s written by Robin Lovelace Coxe and published by . This book was released on 1995 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Flavour Changing Neutral Currents in Single Top-quark Production at √s by : Muhammad Alhroob
Download or read book Search for Flavour Changing Neutral Currents in Single Top-quark Production at √s written by Muhammad Alhroob and published by . This book was released on 2013 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Anomalous Single Top Quark Production Via Flavour-Changing Neutral Currents with the ATLAS Detector at the Large Hadron Collider by :
Download or read book Search for Anomalous Single Top Quark Production Via Flavour-Changing Neutral Currents with the ATLAS Detector at the Large Hadron Collider written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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