INVESTIGADORES
MONTICELLI Fernando Gabriel
artículos
Título:
Search for light scalar top quark pair production in final states with two leptons with the ATLAS detector in √s = 7 TeV proton-proton collisions
Autor/es:
ATLAS COLLABORATION, G. AAD, F. MONTICELLI, ET AL
Revista:
EUROPEAN PHYSICAL JOURNAL C - PARTICLES AND FIELDS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2012 vol. 2012 p. 1 - 23
ISSN:
1434-6044
Resumen:
A search
is presented for the pair production of light scalar top quarks in
sqrt(s) = 7 TeV proton-proton collisions recorded with the ATLAS
detector at the Large Hadron Collider. This analysis uses the full data
sample collected during 2011 that corresponds to a total integrated
luminosity of 4.7 fb-1. Light scalar top quarks are searched for in
events with two opposite-sign leptons (e, mu), large missing transverse
momentum and at least one jet in the final state. No excess over
Standard Model expectations is found, and the results are interpreted
under the assumption that the light scalar top decays to a b-quark in
addition to an on-shell chargino whose decay occurs through a virtual W
boson. If the chargino mass is 106 GeV, light scalar top quark masses up
to 130 GeV are excluded for neutralino masses below 70 GeV.