Search For First Generation Leptoquarks In The E Jj And Eejj Decay Channels In Pp Collisions At S
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Search For First Generation Leptoquarks In The E Nu Jj And Eejj Decay Channels In P Pbar Collisions At Sqrt S
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Author : Federica Strumia
language : en
Publisher:
Release Date : 2001
Search For First Generation Leptoquarks In The E Nu Jj And Eejj Decay Channels In P Pbar Collisions At Sqrt S written by Federica Strumia 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.
Le sujet de cette thèse est la recherche des leptoquarks scalaires et vectoriels de première génération produits en couple dans des collisions proton-antiproton à une énergie du centre de masse de 1.8 TeV et se désintégrant dans les canaux "e[nu]jj" et "eejj". L'analyse a été conduite sur les données récoltées par l'expérience CDF pendant la période 1992-1995.
Search For First Generation Leptoquarks In The E Jj And Eejj Decay Channels In Pp Collisions At S
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Author : Federica Strumia
language : en
Publisher:
Release Date : 2001
Search For First Generation Leptoquarks In The E Jj And Eejj Decay Channels In Pp Collisions At S written by Federica Strumia 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.
Le sujet de cette thèse est la recherche des leptoquarks scalaires et vectoriels de première génération produits en couple dans des collisions proton-antiproton à une énergie du centre de masse de 1.8 TeV et se désintégrant dans les canaux "e[nu]jj" et "eejj". L'analyse a été conduite sur les données récoltées par l'expérience CDF pendant la période 1992-1995.
Search For First Generation Leptoquarks In The Evjj And Eejj Decay Channels In Pp Collisions At Square Root Of S
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Author : Federica Strumia
language : en
Publisher:
Release Date : 2001
Search For First Generation Leptoquarks In The Evjj And Eejj Decay Channels In Pp Collisions At Square Root Of S written by Federica Strumia 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 First Generation Scalar Leptoquarks In The Evjj Channel In Pp Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2011
Search For First Generation Scalar Leptoquarks In The Evjj Channel 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-production of first generation scalar leptoquarks is performed in the final state containing an electron, a neutrino, and at least two jets using proton-proton collision data at sqrt(s)=7 TeV. The data were collected by the CMS detector at the LHC, corresponding to an integrated luminosity of 36 inverse picobarns. The number of observed events is in good agreement with the predictions for standard model processes. Prior CMS results in the dielectron channel are combined with this electron+neutrino search. A 95% confidence level combined lower limit is set on the mass of a first generation scalar leptoquark at 340 GeV for beta=0.5, where beta is the branching fraction of the leptoquark to an electron and a quark. These results represent the most stringent direct limits to date for values of beta greater than 0.05.
Search For First Generation Leptoquarks In Proton Antiproton Collisions At The Center Of Mass Energy
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Author : Shaohua Fu
language : en
Publisher:
Release Date : 2004
Search For First Generation Leptoquarks In Proton Antiproton Collisions At The Center Of Mass Energy written by Shaohua Fu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
Search For First Generation Leptoquarks In Proton Antiproton Collisions At The Center Of Mass Energy
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Author :
language : en
Publisher:
Release Date : 2004
Search For First Generation Leptoquarks In Proton Antiproton Collisions At The Center Of Mass Energy written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
We describe a search for first generation leptoquarks decaying into the eejj final state in $p\bar{p}$ collisions at a center of mass energy of 1.96 TeV using the D0 detector at the Fermilab Tevatron. this search is based on data collected during 2002-2003 with an integrated luminosity of (130.4 =- 8.5) pb -1. Leptoquarks are assumed to be produced in pairs and to decay into an electron and a quark with a branching ration ?. We observe no evidence for leptoquarks, and set an upper cross section limit of 0.086 pb at the 95% confidence level corresponding to a lower mass limit of 231 GeV/c2 for scalar leptoquarks when ? = 1.
Search For First Generation Leptoquark Pair Production In The Electron Missing Energy Jets Final State
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Author :
language : en
Publisher:
Release Date : 2011
Search For First Generation Leptoquark Pair Production In The Electron Missing Energy Jets Final State 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 a search for the pair production of first generation scalar leptoquarks (LQ) in data corresponding to an integrated luminosity of 5.4 fb-1 collected with the D0 detector at the Fermilab Tevatron Collider in pp collisions at √s = 1.96 TeV. In the channel LQLQ → eq?eq, where q,q are u or d quarks, no significant excess of data over background is observed, and we set a 95% C.L. lower limit of 326 GeV on the leptoquark mass, assuming equal probabilities of leptoquark decays to eq and ?subesubq.
Search For Pair Production Of First And Second Generation Leptoquarks In Proton Proton Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2015
Search For Pair Production Of First And Second Generation Leptoquarks In Proton Proton 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 2015 with categories.
Our search for pair production of first and second generation leptoquarks is performed in final states containing either two charged leptons and two jets, or one charged lepton, one neutrino and two jets, using proton-proton collision data at √s = 8 TeV. The data, corresponding to an integrated luminosity of 19.7 fb-1, were recorded with the CMS detector at the LHC. First-generation scalar leptoquarks with masses less than 1010 (850) GeV are excluded for [beta] = 1.0 (0.5), where b is the branching fraction of a leptoquark decaying to a charged lepton and a quark. Similarly, secondgeneration scalar leptoquarks with masses less than 1080 (760) GeV are excluded for [beta] = 1.0 (0.5). Furthermore, mass limits are also set for vector leptoquark production scenarios with anomalous vector couplings, and for R-parity violating supersymmetric scenarios of top squark pair production resulting in similar final-state signatures. These are the most stringent limits placed on the masses of leptoquarks and RPV top squarks to date.
Search For Pair Production Of First Generation Scalar Leptoquarks In Pp Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2010
Search For Pair Production Of First Generation Scalar Leptoquarks 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 2010 with categories.
Search For First Generation Scalar Leptoquarks In P Anti P Collisions At S 1 2
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Author :
language : en
Publisher:
Release Date : 2005
Search For First Generation Scalar Leptoquarks 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 pair production of first-generation scalar leptoquarks (LQ) in pp collisions at √(s)=1.96 TeV using an integrated luminosity of 203 pb−1 collected at the Fermilab Tevatron collider by the CDF experiment. We observe no evidence for LQ production in the topologies arising from LQLQ→eqeq and LQLQ→eq?q, and derive 95% C.L. upper limits on the LQ production cross section. The results are combined with those obtained from a separately reported CDF search in the topology arising from LQLQ→?q?q and 95% C.L. lower limits on the LQ mass as a function of ?=BR(LQ→eq) are derived. The limits are 236, 205 and 145 GeV/c2 for ?=1, ?=0.5 and ?=0.1, respectively.