Search for Narrow Resonances and Quantum Black Holes in Inclusive and $b$-Tagged Dijet Mass Spectra from $pp$ Collisions at $\sqrt{s}=7$ TeV - INSPIRE

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Search for Narrow Resonances and Quantum Black Holes in Inclusive and $b$ -Tagged Dijet Mass Spectra from $pp$ Collisions at $\sqrt{s}=7$ TeV

CMS

Collaboration

Oct, 2012

22 pages

Published in:

JHEP 01 (2013) 013

Published: Jan 2, 2013

e-Print:

1210.2387 [hep-ex]

DOI:

10.1007/JHEP01(2013)013

PDG: SEARCHES FOR BLACK HOLE PRODUCTION

Report number:

CMS-EXO-11-094,
CERN-PH-EP-2012-277

Experiments:

CERN-LHC-CMS

View in:

reference search118 citations

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Abstract: (arXiv)

A search for narrow resonances and quantum black holes is performed in inclusive and b-tagged dijet mass spectra measured with the CMS detector at the LHC. The data set corresponds to 5 inverse femtobarns of integrated luminosity collected in pp collisions at sqrt(s) = 7 TeV. No narrow resonances or quantum black holes are observed. Model-independent upper limits at the 95% confidence level are obtained on the product of the cross section, branching fraction into dijets, and acceptance for three scenarios: decay into quark-quark, quark-gluon, and gluon-gluon pairs. Specific lower limits are set on the mass of string resonances (4.31 TeV), excited quarks (3.32 TeV), axigluons and colorons (3.36 TeV), scalar color-octet resonances (2.07 TeV), E(6) diquarks (3.75 TeV), and on the masses of W' (1.92 TeV) and Z' (1.47 TeV) bosons. The limits on the minimum mass of quantum black holes range from 4 to 5.3 TeV. In addition, b-quark tagging is applied to the two leading jets and upper limits are set on the production of narrow dijet resonances in a model-independent fashion as a function of the branching fraction to b-jet pairs.

Note:

Replaced with published version. Included journal reference and DOI

black hole: quantum
dijet: mass spectrum: measured
p p: scattering
string: resonance
string: mass
W': mass
bottom: particle identification
narrow resonance: search for
channel cross section: branching ratio: upper limit
CERN LHC Coll

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