IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
ATLAS search for new phenomena in dijet mass and angular distributions using pp collisions at s√=7 TeV
Autor/es:
ANDUAGA, XABIER SEBASTIAN; THE ATLAS COLLABORATION
Revista:
JOURNAL OF HIGH ENERGY PHYSICS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2012 p. 29 - 66
ISSN:
1126-6708
Resumen:
Mass and angular distributions of dijets produced in LHC proton-proton
collisions at a centre-of-mass energy sqrt(s)=7 TeV have been studied
with the ATLAS detector using the full 2011 data set with an integrated
luminosity of 4.8/fb. Dijet masses up to 4.0 TeV have been probed. No
resonance-like features have been observed in the dijet mass spectrum,
and all angular distributions are consistent with the predictions of
QCD. Exclusion limits on six hypotheses of new phenomena have been set
at 95% CL in terms of mass or energy scale, as appropriate. These
hypotheses include excited quarks below 2.83 TeV, colour octet scalars
below 1.86 TeV, heavy W bosons below 1.68 TeV, string resonances below
3.61 TeV, quantum black holes with six extra space-time dimensions for
quantum gravity scales below 4.11 TeV, and quark contact interactions
below a compositeness scale of 7.6 TeV in a destructive interference
scenario.