Search For First Generation Scalar Leptoquarks In P Anti P Collisions At S 1 2

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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.

Trends In Experimental High Energy Physics

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Author : Jacob R. Stevens
language : en
Publisher:
Release Date : 2005

Trends In Experimental High Energy Physics written by Jacob R. Stevens and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Science categories.

Trends In Experimental High Energy Physics

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.

High Energy Physics Index

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Author :
language : en
Publisher:
Release Date : 1994

High Energy Physics 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 1994 with Particles (Nuclear physics) categories.

Government Reports Annual Index

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Author :
language : en
Publisher:
Release Date : 1994

Government Reports Annual 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 1994 with Government reports announcements & index categories.

Search For First Generation Scalar Leptoquarks In P Anti P Collisions At S

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Author :
language : en
Publisher:
Release Date : 2004

Search For First Generation Scalar Leptoquarks In P Anti P 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 2004 with categories.

The authors report on a search for pair production of first-generation scalar leptoquarks (LQ) in p{bar p} collisions at √s = 1.96 TeV using an integrated luminosity of 252 pb−1 collected at the Fermilab Tevatron collider by the D0 detector. They observe no evidence for LQ production in the topologies arising from LQ{ovr LQ} → eqeq and LQ{ovr LQ} → eqvq, and derive 95% C.L. lower limits on the LQ mass as a function of?, where? is the branching fraction for LQ → eq. The limits are 241 and 218 GeV/c2 for? = 1 and 0.5, respectively. These results are combined with those obtained by D0 at √s = 1.8 TeV, which increases these LQ mass limits to 256 and 234 GeV/c2.

Search For Pair Production Of Second Generation Scalar Leptoquarks In P Anti P Collisions At S 1 2

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Author :
language : en
Publisher:
Release Date : 2006

Search For Pair Production Of Second 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 2006 with categories.

The authors report on a search for the pair production of second generation scalar leptoquarks (LQ2) in p{bar p} collisions at the center-of-mass energy √s = 1.96 TeV, using data corresponding to an integrated luminosity of 294 ± 19 pb−1 recorded with the D0 detector. No evidence for a leptoquark signal in the LQ2 {ovr LQ}2 → [mu]q[mu]q channel has been observed, and upper bounds on the product of cross section times branching fraction were set. This yields lower mass limits of m{sub LQ2} > 247 GeV for [beta] = [Beta](LQ{sub 2} → [mu]q) = 1 and m{sub LQ{sub 2}} > 182 GeV for [beta] = 1/2. Combining these limits with previous D0 results, the lower limits on the mass of a second generation scalar leptoquark are m{sub LQ{sub 2}} > 251 GeV and m{sub LQ{sub 2}} > 204 GeV for [beta] = 1 and [beta] = 1/2, respectively.

Energy Research Abstracts

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Author :
language : en
Publisher:
Release Date : 1994-11

Energy Research Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994-11 with Power resources categories.

Exotic Physics

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Author : D. Acosta
language : en
Publisher:
Release Date : 2004

Exotic Physics written by D. Acosta 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 report on a search for the pair production of scalar leptoquarks, LQ, using 191 pb{sup -1} of proton-antiproton collision data recorded by the CDF experiment during Run II of the Tevatron. The leptoquarks are sought via their decay into a neutrino and quark yielding missing transverse energy and several jets of large transverse energy. No evidence for leptoquark production is observed, and limits are set on {sigma}(p{bar p} {yields} LQ{ovr OQ}X {yields} v{bar v}q{bar q}X). Using a next-to-leading order theoretical prediction of the cross section for scalar leptoquark production, we exclude first-generation leptoquarks in the mass interval 78 to 117 GeV/c{sup 2} at the 95% confidence level for BR(LQ {yields} vq) = 100%.

Search For Second 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 Second 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.

Results on a search for pair production of second generation scalar leptoquark in p{bar p} collisions at √s=1.96 TeV are reported. The data analyzed were collected by the CDF detector during the 2002-2003 Tevatron Run II and correspond to an integrated luminosity of 198 pb−1. Leptoquarks (LQ) are sought through their decay into (charged) leptons and quarks, with final state signatures represented by two muons and jets and one muon, large transverse missing energy and jets. We observe no evidence for LQ production and derive 95% C.L. upper limits on the LQ production cross sections as well as lower limits on their mass as a function of [beta], where [beta] is the branching fraction for LQ → [mu]q.