Search For Flavor Changing Neutral Current Top Quark Decays T Hq With H Bb In Pp Collisions At S

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Search For Flavor Changing Neutral Current Top Quark Decays T Hq With H Bb In Pp Collisions At S 8 Tev With The Atlas Detector

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Author : Shota Tsiskaridze
language : en
Publisher: Springer
Release Date : 2017-08-02

Search For Flavor Changing Neutral Current Top Quark Decays T Hq With H Bb In Pp Collisions At S 8 Tev With The Atlas Detector written by Shota Tsiskaridze and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-08-02 with Science categories.

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.

Search For Flavor Changing Neutral Current Top Quark Decays T Hq With H Bb In Pp Collisions At Square Root Of 2

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Author : Shota Tsiskaridze
language : en
Publisher:
Release Date : 2015

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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.

Search For Flavor Changing Neutral Current Top Quark Decays T Hq With H Bb In Pp Collisions At S

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Author : Shota Tsiskaridze
language : en
Publisher:
Release Date : 2016

Search For Flavor Changing Neutral Current Top Quark Decays T Hq With H Bb In Pp Collisions At S written by Shota Tsiskaridze and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.

Esta tesis presenta la búsqueda de decaimientos del quark top, via corrientes neutras que cambian el sabor, a quarks tipo u (q = u; c) y a el bosón de Higgs del modelo estándar. El análisis busca eventos donde un quark top decae a Wb y el W decae en leptones, mientras que el otro quark top decae a Hq. El estudio se basa en colisiones protón-protón a una energía en el centro de masa de √ s = 8 TeV obtenidas en 2012 con el detector ATLAS del Large Hadron Collider del CERN, usando una muestra de 20.3 fb-1. Los datos corresponden a eventos con un electrón o muon aislado y al menos cuatro jets en el estado final. La búsqueda explota la alta multiplicidad de quarks b que caracterizan la señal, empleando un discriminante basado en la verosimilitud que utiliza las diferencias cinemáticas entre la señal y el fondo (el cual está dominado por eventos tt—›WbWb). No se observan eventos en exceso del fondo esperado. Los límites de un 95% de confianza para el proceso observado (esperado) son de 0.56% (0.42%) para t —›Hc y de 0.61% (0.64%) para t—›Hu. Los límites de esta búsqueda han sido combinados con las búsquedas en los canales con modos de decaimiento H—› y H—›WW*; tt , logrando mejorar significativamente la sensibilidad. Los límites de un 95% de confianza para la combinación observada (esperada) es de 0.46% (0.25%) para t—› Hc y 0.45% (0.29%) para t ! Hu respectivamente. Los límites correspondientes en el acoplamiento.

Science Citation Index

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Author :
language : en
Publisher:
Release Date : 1992

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 1992 with Science categories.

Vols. for 1964- have guides and journal lists.

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.

A Search For Flavour Changing Neutral Currents In Top Quark Decays In Pp Collision Data Collected With The Atlas Detector At U221a S

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Author :
language : en
Publisher:
Release Date : 2012

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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.

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)

A Search For Flavour Changing Neutral Currents In Top Quark Decays In Pp Collision Data Collected With The Atlas Detector At S

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Author :
language : en
Publisher:
Release Date : 2014

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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.

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)

A Search For Flavor Changing Neutral Current Decays Of The Top Quark In Pp Collisions At S

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Author : Robin Lovelace Coxe
language : en
Publisher:
Release Date : 1995

A Search For Flavor Changing Neutral Current Decays Of The Top Quark In Pp Collisions At S written by Robin Lovelace Coxe and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Particles (Nuclear physics) categories.

Search For Top Quark Decays Via Higgs Boson Mediated Flavor Changing Neutral Currents In Pp Collisions At S

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Author :
language : en
Publisher:
Release Date : 2016

Search For Top Quark Decays Via Higgs Boson Mediated Flavor Changing Neutral Currents In Pp Collisions At 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 2016 with categories.

Oechslin Oscar

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Author :
language : en
Publisher:
Release Date :

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.