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Search for excited muons in p(p)over-bar collisions at root s=1.96 TeV
- Abazov, V. M. (author)
- Åsman, Barbro (author)
- Clément, Christophe (author)
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- Gollub, Nils (author)
- Strandberg, Jonas (author)
- Zverev, E. G. (author)
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- 2006
- 2006
- English.
- In: Physical Review D. - 1550-7998 .- 1550-2368. ; 73:11, s. 111102-
- Journal article (peer-reviewed)
Abstract
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- We present the results of a search for the production of an excited state of the muon, mu(*), in proton antiproton collisions at root s =1.96 TeV. The data have been collected with the D0 experiment at the Fermilab Tevatron Collider and correspond to an integrated luminosity of approximately 380 pb(-1). We search for mu(*) in the process p (p) over bar ->mu(*)mu, with the mu(*) subsequently decaying to a muon plus photon. No excess above the standard model expectation is observed in data. Interpreting our data in the context of a model that describes mu(*) production by four-fermion contact interactions and mu(*) decay via electroweak processes, we set a 95% confidence level production cross section upper limit ranging from 0.057 to 0.112 pb, depending on the mass of the excited muon. Choosing the scale for contact interactions to be Lambda=1 TeV, excited muon masses below 618 GeV are excluded.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Physics
- Fysik
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- ref (subject category)
- art (subject category)
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