A search for an excited muon decaying to a muon and two jets in pp collisions at root s=8 TeV with the ATLAS detector
ATLAS Collaboration
刊名NEW JOURNAL OF PHYSICS
2016
卷号18
关键词excited leptons lepton compositeness leptoquarks
DOI10.1088/1367-2630/18/7/073021
文章类型Article
英文摘要Anew search signature for excited leptons is explored. Excited muons are sought in the channel pp -> mu mu* -> mu mu jet jet, assuming both the production and decay occur via a contact interaction. The analysis is based on 20.3 fb(-1) of pp collision data at a centre-of-mass energy of root s = 8 TeV taken with the ATLAS detector at the large hadron collider. No evidence of excited muons is found, and limits are set at the 95% confidence level on the cross section times branching ratio as a function of the excited-muon mass m(mu)*. For m(mu)* between 1.3 and 3.0 TeV, the upper limit on sigma B(mu* -> mu q (q) over bar) is between 0.6 and 1 fb. Limits on sB are converted to lower bounds on the compositeness scale Lambda. In the limiting case Lambda = m(mu)*, excited muons with a mass below 2.8 TeV are excluded. With the same model assumptions, these limits at larger mu* masses improve upon previous limits from traditional searches based on the gauge-mediated decay mu* -> mu gamma.
关键词[WOS]PARTON DISTRIBUTIONS ; LEPTON PRODUCTION ; HADRON COLLIDERS ; QUARK ; EVENTS ; HEAVY ; HERA ; LHC
语种英语
WOS记录号WOS:000381870700003
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260854
专题中国科学院高能物理研究所_实验物理中心_期刊论文
作者单位中国科学院高能物理研究所
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ATLAS Collaboration. A search for an excited muon decaying to a muon and two jets in pp collisions at root s=8 TeV with the ATLAS detector[J]. NEW JOURNAL OF PHYSICS,2016,18.
APA ATLAS Collaboration.(2016).A search for an excited muon decaying to a muon and two jets in pp collisions at root s=8 TeV with the ATLAS detector.NEW JOURNAL OF PHYSICS,18.
MLA ATLAS Collaboration."A search for an excited muon decaying to a muon and two jets in pp collisions at root s=8 TeV with the ATLAS detector".NEW JOURNAL OF PHYSICS 18(2016).
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