Search for excited electrons and muons in sqrt(s)=8 TeV proton-proton collisions with the ATLAS detector
Abstract
The ATLAS detector at the Large Hadron Collider is used to search for excited electrons and excited muons in the channel pp → ℓℓ* → ℓℓγ, assuming that excited leptons are produced via contact interactions. The analysis is based on 13 fb−1 of pp collisions at a centre-of-mass energy of 8 TeV. No evidence for excited leptons is found, and a limit is set at the 95% credibility level on the cross section times branching ratio as a function of the excited-lepton mass mℓ*. For mℓ* ≥ 0.8 TeV, the respective upper limits on σB(ℓ* → ℓγ) are 0.75 and 0.90 fb for the e* and μ* searches. Limits on σB are converted into lower bounds on the compositeness scale Λ. In the special case where Λ = mℓ*, excited-electron and excited-muon masses below 2.2 TeV are excluded.
Autore Pugliese
Tutti gli autori
-
G. AAD , M. BIANCO , G. CHIODINI , E. GORINI , M. PRIMAVERA , S. SPAGNOLO , A. VENTURA , ET AL.
Titolo volume/Rivista
NEW JOURNAL OF PHYSICS
Anno di pubblicazione
2013
ISSN
1367-2630
ISBN
Non Disponibile
Numero di citazioni Wos
10
Ultimo Aggiornamento Citazioni
28/04/2018
Numero di citazioni Scopus
19
Ultimo Aggiornamento Citazioni
28/04/2018
Settori ERC
Non Disponibile
Codici ASJC
Non Disponibile
Condividi questo sito sui social