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Title
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Search for narrow resonances and quantum black holes in inclusive and b-tagged dijet mass spectra from pp collisions at
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| 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 fb(-1) of integrated luminosity collected in pp collisions at root 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. |
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Language
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English
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Source (journal)
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Journal of high energy physics. - Bristol
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Publication
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Bristol
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2013
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ISSN
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1126-6708
1029-8479
[online]
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DOI
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10.1007/JHEP01(2013)013
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Volume/pages
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1
(2013)
, p. 1-40
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Article Reference
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013
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ISI
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000315583200013
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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