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https://hdl.handle.net/10316/108728
Title: | A search for an excited muon decaying to a muon and two jets in pp collisions at √ s = 8 TeV with the ATLAS detector | Authors: | Santos, S. P. Amor dos Carvalho, J. Fiolhais, M. C. N. Galhardo, B. Veloso, F. Wolters, H. ATLAS Collaboration |
Issue Date: | 2016 | Publisher: | Institute of Physics Publishing | Serial title, monograph or event: | New Journal of Physics | Volume: | 18 | Issue: | 7 | Abstract: | Anew search signature for excited leptons is explored. Excited muons are sought in the channel pp → μμ∗→ μμ 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 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-muonmass μμ∗. For μμ∗between 1.3 and 3.0 TeV, the upper limit on φB (μ∗→ μqq) is between 0.6 and 1 fb. Limits on sB are converted to lower bounds on the compositeness scale. In the limiting case L = μμ∗, excitedmuonswith amass below2.8 TeVare excluded.With the samemodel assumptions, these limits at larger μ∗masses improve upon previous limits fromtraditional searches based on the gauge-mediated decay μ∗→ μγ. | URI: | https://hdl.handle.net/10316/108728 | DOI: | 10.1088/1367-2630/18/7/073021 | Rights: | openAccess |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais |
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A-search-for-an-excited-muon-decaying-to-a-muon-and-two-jets-in-pp-collisions-at--s--8-TeV-with-the-ATLAS-detectorNew-Journal-of-Physics.pdf | 2.86 MB | Adobe PDF | View/Open |
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