Journal article
Search for resonances and quantum black holes using dijet mass spectra in proton-proton collisions at √ s = 8 TeV
Physical review. D, Particles, fields, gravitation, and cosmology, Vol.91(5), 052009
03/12/2015
DOI: 10.1103/PhysRevD.91.052009
Abstract
A search for resonances and quantum black holes is performed using the dijet mass spectra measured in proton-proton collisions at
√
s
=
8
TeV
with the CMS detector at the LHC. The data set corresponds to an integrated luminosity of
19.7
fb
−
1
. In a search for narrow resonances that couple to quark-quark, quark-gluon, or gluon-gluon pairs, model-independent upper limits, at 95% confidence level, are obtained on the production cross section of resonances, with masses above 1.2 TeV. When interpreted in the context of specific models the limits exclude string resonances with masses below 5.0 TeV; excited quarks below 3.5 TeV; scalar diquarks below 4.7 TeV;
W
′
bosons below 1.9 TeV or between 2.0 and 2.2 TeV;
Z
′
bosons below 1.7 TeV; and Randall-Sundrum gravitons below 1.6 TeV. A separate search is conducted for narrow resonances that decay to final states including
b
quarks. The first exclusion limit is set for excited
b
quarks, with a lower mass limit between 1.2 and 1.6 TeV depending on their decay properties. Searches are also carried out for wide resonances, assuming for the first time width-to-mass ratios up to 30%, and for quantum black holes with a range of model parameters. The wide resonance search excludes axigluons and colorons with mass below 3.6 TeV, and color-octet scalars with mass below 2.5 TeV. Lower bounds between 5.0 and 6.3 TeV are set on the masses of quantum black holes.
Details
- Title: Subtitle
- Search for resonances and quantum black holes using dijet mass spectra in proton-proton collisions at √ s = 8 TeV
- Creators
- CMS Collaboration (Institution)V Khachatryan - A. Alikhanyan National Laboratory
- Contributors
- B. Bilki (Contributor) - University of IowaW Clarida (Contributor) - University of IowaKamuran Dilsiz (Contributor) - University of Iowa, Physics and AstronomyM. Haytmyradov (Contributor) - University of IowaJ-P Merlo (Contributor) - University of IowaAlexi Mestvirishvili (Contributor) - University of Iowa, Physics and AstronomyA. Moeller (Contributor) - University of IowaJane M Nachtman (Contributor) - University of Iowa, Physics and AstronomyHasan Ogul (Contributor) - University of Iowa, Physics and AstronomyYasar Onel (Contributor) - University of Iowa, Physics and AstronomyF. Ozok (Contributor) - University of IowaAldo Penzo (Contributor) - University of Iowa, Physics and AstronomyR Rahmat (Contributor) - University of IowaS. Sen (Contributor) - University of IowaP Tan (Contributor) - University of IowaE. Tiras (Contributor) - University of IowaJames W Wetzel (Contributor) - University of Iowa, Physics and AstronomyKai Yi (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Physical review. D, Particles, fields, gravitation, and cosmology, Vol.91(5), 052009
- DOI
- 10.1103/PhysRevD.91.052009
- ISSN
- 1550-7998
- eISSN
- 1550-2368
- Publisher
- American Physical Society
- Grant note
- DOI: 10.13039/501100002367, name: Chinese Academy of Sciences; DOI: 10.13039/501100002341, name: Suomen Akatemia; DOI: 10.13039/501100001809, name: National Natural Science Foundation of China; DOI: 10.13039/501100001659, name: Deutsche Forschungsgemeinschaft; DOI: 10.13039/501100003725, name: National Research Foundation of Korea; DOI: 10.13039/501100004386, name: University of Malaya; DOI: 10.13039/100000015, name: U.S. Department of Energy; DOI: 10.13039/100000001, name: National Science Foundation; name: Brazilian Funding Agencies; name: Colombian Funding Agency; DOI: 10.13039/100008982, name: Qatar National Research Fund
- Language
- English
- Date published
- 03/12/2015
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984440057802771
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