Search for production of resonant states in the photon-jet mass distribution using $pp$ collisions at $\sqrt{s}=7$ TeV collected by the ATLAS detector - INSPIRE

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Search for production of resonant states in the photon-jet mass distribution using $pp$ collisions at $\sqrt{s}=7$ TeV collected by the ATLAS detector

ATLAS

Collaboration

Dec, 2011

5 pages

Published in:

Phys.Rev.Lett. 108 (2012) 211802

e-Print:

1112.3580 [hep-ex]

DOI:

10.1103/PhysRevLett.108.211802

Report number:

CERN-PH-EP-2011-203

Experiments:

CERN-LHC-ATLAS

View in:

reference search31 citations

Citations per year

Abstract: (arXiv)

This Letter describes a model-independent search for production of new resonant states in photon-jet events in 2.11 fb^-1 of proton-proton collisions at sqrt(s) = 7 TeV. We compare the photon-jet mass distribution to a data-driven background estimate and find consistency with the background hypothesis. Given the lack of evidence for a signal, we set 95% CL limits on generic Gaussian-shape signals and on a benchmark excited-quark (q*) model, excluding 2 TeV Gaussian resonances with cross section times branching ratio times acceptance times efficiency near 5 fb and excluding q* masses below 2.46 TeV, respectively.

Note:

5 pages plus author list (18 pages total), 3 figures, revised author list, matches Physical Review Letters version

13.85.Rm
14.80.-j
14.70.Bh
12.60.-i
narrow resonance: search for
quark: excited state
p p: scattering
mass spectrum: (jet photon)
ATLAS
excited state: radiative decay

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Figures(3)

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