Search For The Pair Production Of A Vector Like Quark In B Z Events From Pp Collisions At Radix S

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Search For The Pair Production Of A Vector Like Quark In B Z Events From Pp Collisions At Radix S

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Author : 高凱逸
language : en
Publisher:
Release Date : 2013

Search For The Pair Production Of A Vector Like Quark In B Z Events From Pp Collisions At Radix S written by 高凱逸 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 A Vectorlike Quark With Charge 2 3 In T Z Events From Pp Collisions At Sqrt S

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Author :
language : en
Publisher:
Release Date : 2011

Search For A Vectorlike Quark With Charge 2 3 In T Z Events From 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 heavy vector-like charge-2/3 quarks, T, in pp collisions at a center-of-mass energy of 7 TeV, is performed with the CMS detector at the LHC. Events consistent with the flavor-changing-neutral-current decay of a T quark to a top quark and a Z boson are selected by requiring two leptons from the Z-boson decay, as well as an additional isolated charged lepton. In a data sample corresponding to an integrated luminosity of 1.14 fb-1 inverse femtobarns, the number of observed events is found to be consistent with the standard model background prediction. Assuming a branching fraction of 100% for the decay T → tZ, a T quark with a mass less than 475 GeV/c2 is excluded at the 95% confidence level.

Search For Scalar Charm Quark Pair Production In Pp Collisions At S

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Author :
language : en
Publisher:
Release Date : 2015

Search For Scalar Charm Quark Pair Production 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 2015 with categories.

The results of a dedicated search for pair production of scalar partners of charm quarks are reported. The search is based on an integrated luminosity of 20.3 fb–1 of pp collisions at √s=8 TeV recorded with the ATLAS detector at the LHC. The search is performed using events with large missing transverse momentum and at least two jets, where the two leading jets are each tagged as originating from c quarks. The events containing isolated electrons or muons are vetoed. In an R-parity-conserving minimal supersymmetric scenario in which a single scalar-charm state is kinematically accessible, and where it decays exclusively into a charm quark and a neutralino, 95% confidence-level upper limits are obtained in the scalar-charm–neutralino mass plane such that, neutralino masses below 200 GeV, scalar-charm masses up to 490 GeV are excluded.

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.

A Search For Bottom Type Vector Like Quark Pair Production In A Fully Hadronic Final State In Proton Proton Collisions At S

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Author : Albert M. Sirunyan
language : en
Publisher:
Release Date : 2020

A Search For Bottom Type Vector Like Quark Pair Production In A Fully Hadronic Final State In Proton Proton Collisions At S written by Albert M. Sirunyan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.

Search For Single Production Of Vector Like Quarks Decaying Into Wb In Pp Collisions At S

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Author : Dustin Biedermann
language : en
Publisher:
Release Date : 2019

Search For Single Production Of Vector Like Quarks Decaying Into Wb In Pp Collisions At S written by Dustin Biedermann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.

Search For Pair Production Of Vector Like T And B Quarks In Single Lepton Final States Using Boosted Jet Substructure In Proton Proton Collisions At S

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Author :
language : en
Publisher:
Release Date : 2017

Search For Pair Production Of Vector Like T And B Quarks In Single Lepton Final States Using Boosted Jet Substructure In Proton Proton 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 2017 with categories.

Search For Single Production Of Vector Like Quarks Decaying Into Wb In Pp Collisions At Sqrt S

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Author : Dustin Biedermann
language : en
Publisher:
Release Date : 2020

Search For Single Production Of Vector Like Quarks Decaying Into Wb In Pp Collisions At Sqrt S written by Dustin Biedermann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.

Search For Single Production Of A Vector Like Partner Of The Bottom Quark In The Bh Bb Final State In Pp Collisions At S

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Author : Marco Montella
language : en
Publisher:
Release Date : 2021

Search For Single Production Of A Vector Like Partner Of The Bottom Quark In The Bh Bb Final State In Pp Collisions At S written by Marco Montella and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.

Search For Same Sign Top Quark Pair Production At Sqrt S

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Author :
language : en
Publisher:
Release Date : 2011

Search For Same Sign Top Quark Pair Production 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.

An inclusive search for same-sign top-quark pair production in pp collisions at sqrt(s) = 7 TeV is performed using a data sample recorded with the CMS detector in 2010, corresponding to an integrated luminosity of 35 inverse picobarns. This analysis is motivated by recent studies of p p-bar to t t-bar reporting mass-dependent forward-backward asymmetries larger than expected from the standard model. These asymmetries could be due to Flavor Changing Neutral Currents (FCNC) in the top sector induced by t-channel exchange of a massive neutral vector boson (Z'). Models with such a Z' also predict enhancement of same-sign top-pair production in pp or p p-bar collisions. Limits are set as a function of the Z' mass and its couplings to u and t quarks. These limits disfavour the FCNC interpretation of the Tevatron results.