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# Search for the production of an excited bottom quark decaying to $tW$ in proton-proton collisions at $s=8$ TeV

The CMS Collaboration (2016) Search for the production of an excited bottom quark decaying to $tW$ in proton-proton collisions at $s=8$ TeV. Journal of High Energy Physics, 01, 166.

Record type: Article

## Abstract

A search is presented for a singly produced excited bottom quark (b*) decaying to a top quark and a W boson in the all-hadronic, lepton+jets, and dilepton final states in proton-proton collisions at s √ =8
s=8
TeV recorded by the CMS experiment at the CERN LHC. Data corresponding to an integrated luminosity of 19.7 fb−1 are used. No significant excess of events is observed with respect to standard model expectations. We set limits at 95% confidence on the product of the b* quark production cross section and its branching fraction to tW. The cross section limits are interpreted for scenarios including left-handed, right-handed, and vector-like couplings of the b* quark and are presented in the two-dimensional coupling plane based on the production and decay coupling constants. The masses of the left-handed, right-handed, and vector-like b* quark states are excluded at 95% confidence below 1390, 1430, and 1530 GeV, respectively, for benchmark couplings. This analysis gives the most stringent limits on the mass of the b∗ quark to date.

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1509.08141 - Accepted Manuscript
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Accepted/In Press date: 13 January 2016
e-pub ahead of print date: 27 January 2016
Organisations: Physics & Astronomy

## Identifiers

Local EPrints ID: 408090
URI: http://eprints.soton.ac.uk/id/eprint/408090
ISSN: 1029-8479
PURE UUID: 9beb3002-dd0c-4b4a-91df-100420d5806e
ORCID for Alexander Belyaev: orcid.org/0000-0002-1733-4408

## Catalogue record

Date deposited: 11 May 2017 01:08

## Contributors

Author: Vardan Khachatryan
Corporate Author: The CMS Collaboration