A Search For Generation 1 Leptoquarks In Proton Antiproton Collisions At Square Root S
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A Search For Generation 1 Leptoquarks In Proton Antiproton Collisions At Square Root S
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Author : Steven M. Moulding
language : en
Publisher:
Release Date : 1993
A Search For Generation 1 Leptoquarks In Proton Antiproton Collisions At Square Root S written by Steven M. Moulding and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Leptons (Nuclear physics) categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1995
Scientific And Technical Aerospace Reports 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 Aeronautics categories.
Search For 3rd Generation Vector Leptoquarks In The Di Tau Di Jet Channel In Pp Collisions At Square Root Of S
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Author : Stanley Scott Forrester
language : en
Publisher:
Release Date : 2006
Search For 3rd Generation Vector Leptoquarks In The Di Tau Di Jet Channel In Pp Collisions At Square Root Of S written by Stanley Scott Forrester and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
Nuclear Data
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Author :
language : en
Publisher:
Release Date : 1996
Nuclear Data written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Nuclear physics categories.
Search For 3rd Generation Vector Leptoquarks In The Di Tau Di Jet Channel In Proton Antiproton Collisions At Square Root S
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Author : Stanley Scott Forrester
language : en
Publisher:
Release Date : 2006
Search For 3rd Generation Vector Leptoquarks In The Di Tau Di Jet Channel In Proton Antiproton Collisions At Square Root S written by Stanley Scott Forrester and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
We search for third generation vector leptoquarks (V LQ3) produced in colliding p{bar p} beams operating at {radical}s = 1.96 TeV at the CDF experiment in Run II of the Fermilab Tevatron. We use 322 pb{sup -1} of data to search for the V LQ3 signal in the di-tau plus di-jet channel. For the first time, the full matrix element is used in the Monte Carlo simulation of this signal. With no events observed in the signal region, we set a 95% C.L. upper limit on the V LQ3 pair production cross section of {sigma} 344fb, assuming Yang-Mills couplings and Br(V LQ3 {yields} b{tau}) = 1, and a lower limit on the V LQ3 mass of m{sub V LQ3} 317 GeV=c{sup 2}. If theoretical uncertainties on the cross section are applied in the least favorable manner the results are {sigma} 360fb and m{sub V LQ3} 294 GeV=c{sup 2}. The Minimal coupling V LQ3 result is an upper limit on the cross section of {sigma} 493fb ({sigma} 610fb) and the lower limit on the mass is m{sub V LQ3} 251 GeV=c{sup 2} (m{sub V LQ3} 223 GeV=c{sup 2}) for the nominal (1{sigma} varied) theoretical expectation.
A Search For Generation 1 Leptoquarks In Proton Anti Proton Collisions At S 1 2
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Author :
language : en
Publisher:
Release Date : 1993
A Search For Generation 1 Leptoquarks In Proton Anti Proton 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 1993 with categories.
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.
Seach For Second Generation Leptoquarks In Proton Anti Proton Collisions
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Author : Tim U. Christiansen
language : en
Publisher:
Release Date : 2003
Seach For Second Generation Leptoquarks In Proton Anti Proton Collisions written by Tim U. Christiansen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
This document describes the search for second-generation leptoquarks (LQ{sub 2}) in around 114pb{sup -1} of p{bar p} collisions, recorded with the D0 detector between September 2002 and June 2003 at a centre-of-mass energy of {radical}s = 1.96TeV. The predictions of the Standard Model and models including scalar leptoquark production are compared to the data for various kinematic distributions. Since no excess of data over the Standard Model prediction has been observed, a lower limit on the leptoquark mass of M{sub LQ{sub 2}}{sup {beta}=1}> 200GeV has been calculated at 95% confidence level (C.L.), assuming a branching fraction of {beta} = BF(LQ{sub 2} {yields} {mu}j) = 100% into a charged lepton and a quark. The corresponding limit for {beta} = 1/2 is M{sub LQ{sub 2}}{sup {beta}=1/2}> 152 GeV. Finally, the results were combined with those from the search in the same channel at D0 Run I. This combination yields the exclusion limit of M{sub LQ{sub 2}}{sup {beta}=1}> 222 GeV (177GeV) for (beta) = 1 (1/2) at 95% C.L., which is the best exclusion limit for scalar second-generation leptoquarks (for {beta} = 1) from a single experiment to date.
Search For Pair Production Of First Generation Scalar Leptoquarks In Proton Proton Collisions At Complex Square Root Of
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Author : Dinko Ferencek
language : en
Publisher:
Release Date : 2011
Search For Pair Production Of First Generation Scalar Leptoquarks In Proton Proton Collisions At Complex Square Root Of written by Dinko Ferencek 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.
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.