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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 detector

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A new search signature for excited leptons is explored. Excited muons are sought in the channel , 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 taken with the ATLAS detector at the large h...

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Main Authors: Aad, Georges (Author) , Anders, Christoph (Author) , Andrei, George Victor (Author) , Baas, Alessandra Edda (Author) , Brandt, Oleg (Author) , Davygora, Yuriy (Author) , Djuvsland, Julia Isabell (Author) , Dunford, Monica (Author) , Geisler, Manuel Patrice (Author) , Giulini, Maddalena (Author) , Hanke, Paul (Author) , Jongmanns, Jan (Author) , Kluge, Eike-Erik (Author) , Kolb, Mathis (Author) , Kretz, Moritz (Author) , Kugel, Andreas (Author) , Lang, Valerie (Author) , Lisovyi, Mykhailo (Author) , Meier, Karlheinz (Author) , Meyer zu Theenhausen, Hanno (Author) , Narrias Villar, Daniel Isaac (Author) , S̜ahinsoy, Merve (Author) , Schätzel, Sebastian (Author) , Scharf, Veit (Author) , Schmitt, Sebastian (Author) , Schöning, André (Author) , Schultz-Coulon, Hans-Christian (Author) , Sosa Corral, David E. (Author) , Stamen, Rainer (Author) , Starovoitov, Pavel (Author) , Suchek, Stanislav (Author) , Wessels, Martin (Author)
Corporate Author: ATLAS Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 11 July 2016
In: New journal of physics
Year: 2016, Volume: 18, Issue: 7
ISSN:1367-2630
DOI:10.1088/1367-2630/18/7/073021
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1088/1367-2630/18/7/073021
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Author Notes:The ATLAS Collaboration*
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Summary:A new search signature for excited leptons is explored. Excited muons are sought in the channel , 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 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 . For between 1.3 and 3.0 TeV, the upper limit on ) is between 0.6 and 1 fb. Limits on are converted to lower bounds on the compositeness scale Λ. In the limiting case , excited muons with a mass below 2.8 TeV are excluded. With the same model assumptions, these limits at larger masses improve upon previous limits from traditional searches based on the gauge-mediated decay .
Item Description:*The ATLAS Collaboration: G. Aad, C.F. Anders, V. Andrei, A.E. Baas, O. Brandt, Y. Davygora, J.I. Djuvsland, M. Dunford, M.P. Geisler, M. Giulini, P. Hanke. J. Jongmanns, E.-E. Kluge, M. Kolb, M. Kretz, A. Kugel, V.S. Lang, M. Lisovyi, K. Meier, H. Meyer zu Theenhausen, D.I. Narrias Villar, M. Sahinsoy, S. Schaetzel, V. Scharf, S. Schmitt, A. Schoening, H.-C. Schultz-Coulon, D. Sosa, R. Stamen, P. Starovoitov, S. Suchek, M. Wessels [und sehr viele weitere Personen]
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Physical Description:Online Resource
ISSN:1367-2630
DOI:10.1088/1367-2630/18/7/073021

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