Search for single production of vector-like quarks decaying into a b quark and a W boson in proton–proton collisions at s=13TeV

CMS Collaboration

doi:10.1016/j.physletb.2017.07.022

Search for single production of vector-like quarks decaying into a b quark and a W boson in proton–proton collisions at s=13TeV

CMS Collaboration

Department of Physics Engineering

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

Abstract

A search is presented for a heavy vector-like quark, decaying into a b quark and a W boson, which is produced singly in association with a light flavor quark and a b quark. The analysis is performed using a data sample of proton–proton collisions at a center-of-mass energy of s=13TeV collected at the LHC in 2015. The data set used in the analysis corresponds to an integrated luminosity of 2.3fb⁻¹. The search is carried out using events containing one electron or muon, at least one b-tagged jet with large transverse momentum, at least one jet in the forward region of the detector, and missing transverse momentum. No excess over the standard model prediction is observed. Upper limits are placed on the production cross section of heavy exotic quarks: a T quark with a charge of 2/3, and a Y quark with a charge of −4/3. For Y quarks with coupling of 0.5 and B(Y→bW)=100%, the observed (expected) lower mass limits are 1.40 (1.0)TeV. This is the most stringent limit to date on the single production of the Y vector-like quark.

Original language	English
Pages (from-to)	634-656
Number of pages	23
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	772
DOIs	https://doi.org/10.1016/j.physletb.2017.07.022
Publication status	Published - 10 Sept 2017

Bibliographical note

Publisher Copyright:
© 2017 The Author(s)

Funding

Individuals have received support from the Marie-Curie program and the European Research Council and EPLANET (European Union); the Leventis Foundation; the A.P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Council of Science and Industrial Research, India; the HOMING PLUS program of the Foundation for Polish Science, cofinanced from European Union, Regional Development Fund, the Mobility Plus program of the Ministry of Science and Higher Education, the National Science Center (Poland), contracts Harmonia 2014/14/M/ST2/00428, Opus 2014/13/B/ST2/02543, 2014/15/B/ST2/03998, and 2015/19/B/ST2/02861, Sonata-bis 2012/07/E/ST2/01406; the National Priorities Research Program by Qatar National Research Fund; the Programa Clarín-COFUND del Principado de Asturias; the Thalis and Aristeia programs cofinanced by EU-ESF and the Greek NSRF; the Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University and the Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand); and the Welch Foundation, contract C-1845.

Funders	Funder number
EU-ESF
National Science Foundation	1606321, 1151640, 1506168, 1506130, 1624356
Alfred P. Sloan Foundation
Welch Foundation	C-1845
Alexander von Humboldt-Stiftung
Qatar National Research Fund
Ministry of Education and Science
Seventh Framework Programme	246806
Science and Technology Facilities Council	GRIDPP
European Commission
European Research Council
Council of Scientific and Industrial Research, India
Ministerstvo Školství, Mládeže a Tělovýchovy
Fundacja na rzecz Nauki Polskiej
Belgian Federal Science Policy Office
Chulalongkorn University
Agentschap voor Innovatie door Wetenschap en Technologie
Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture
A.G. Leventis Foundation
Narodowe Centrum Nauki	2014/15/B/ST2/03998, 2012/07/E/ST2/01406, 2015/19/B/ST2/02861, 2014/14/M/ST2/00428, 2014/13/B/ST2/02543
European Regional Development Fund

Keywords

CMS
Physics

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10.1016/j.physletb.2017.07.022

Cite this

@article{786b64ea8a6c4974aec84974d37d1aa8,

title = "Search for single production of vector-like quarks decaying into a b quark and a W boson in proton–proton collisions at s=13TeV",

abstract = "A search is presented for a heavy vector-like quark, decaying into a b quark and a W boson, which is produced singly in association with a light flavor quark and a b quark. The analysis is performed using a data sample of proton–proton collisions at a center-of-mass energy of s=13TeV collected at the LHC in 2015. The data set used in the analysis corresponds to an integrated luminosity of 2.3fb−1. The search is carried out using events containing one electron or muon, at least one b-tagged jet with large transverse momentum, at least one jet in the forward region of the detector, and missing transverse momentum. No excess over the standard model prediction is observed. Upper limits are placed on the production cross section of heavy exotic quarks: a T quark with a charge of 2/3, and a Y quark with a charge of −4/3. For Y quarks with coupling of 0.5 and B(Y→bW)=100\%, the observed (expected) lower mass limits are 1.40 (1.0)TeV. This is the most stringent limit to date on the single production of the Y vector-like quark.",

keywords = "CMS, Physics",

author = "\{CMS Collaboration\} and Belknap, \{D. A.\} and J. Buchanan and C. Caillol and S. Dasu and L. Dodd and S. Duric and B. Gomber and M. Grothe and M. Herndon and A. Herv{\'e} and P. Klabbers and A. Lanaro and A. Levine and K. Long and R. Loveless and T. Perry and Pierro, \{G. A.\} and G. Polese and T. Ruggles and A. Savin and N. Smith and Smith, \{W. H.\} and D. Taylor and N. Woods and C. Clarke and R. Harr and Karchin, \{P. E.\} and J. Sturdy and Arenton, \{M. W.\} and P. Barria and B. Cox and J. Goodell and R. Hirosky and A. Ledovskoy and H. Li and C. Neu and T. Sinthuprasith and X. Sun and Y. Wang and E. Wolfe and F. Xia and Sirunyan, \{A. M.\} and A. Tumasyan and W. Adam and E. Asilar and T. Bergauer and J. Brandstetter and E. Brondolin and M. Dragicevic and A. Cakir",

note = "Publisher Copyright: {\textcopyright} 2017 The Author(s)",

year = "2017",

month = sep,

day = "10",

doi = "10.1016/j.physletb.2017.07.022",

language = "English",

volume = "772",

pages = "634--656",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Search for single production of vector-like quarks decaying into a b quark and a W boson in proton–proton collisions at s=13TeV

AU - CMS Collaboration

AU - Belknap, D. A.

AU - Buchanan, J.

AU - Caillol, C.

AU - Dasu, S.

AU - Dodd, L.

AU - Duric, S.

AU - Gomber, B.

AU - Grothe, M.

AU - Herndon, M.

AU - Hervé, A.

AU - Klabbers, P.

AU - Lanaro, A.

AU - Levine, A.

AU - Long, K.

AU - Loveless, R.

AU - Perry, T.

AU - Pierro, G. A.

AU - Polese, G.

AU - Ruggles, T.

AU - Savin, A.

AU - Smith, N.

AU - Smith, W. H.

AU - Taylor, D.

AU - Woods, N.

AU - Clarke, C.

AU - Harr, R.

AU - Karchin, P. E.

AU - Sturdy, J.

AU - Arenton, M. W.

AU - Barria, P.

AU - Cox, B.

AU - Goodell, J.

AU - Hirosky, R.

AU - Ledovskoy, A.

AU - Li, H.

AU - Neu, C.

AU - Sinthuprasith, T.

AU - Sun, X.

AU - Wang, Y.

AU - Wolfe, E.

AU - Xia, F.

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Asilar, E.

AU - Bergauer, T.

AU - Brandstetter, J.

AU - Brondolin, E.

AU - Dragicevic, M.

AU - Cakir, A.

PY - 2017/9/10

Y1 - 2017/9/10

N2 - A search is presented for a heavy vector-like quark, decaying into a b quark and a W boson, which is produced singly in association with a light flavor quark and a b quark. The analysis is performed using a data sample of proton–proton collisions at a center-of-mass energy of s=13TeV collected at the LHC in 2015. The data set used in the analysis corresponds to an integrated luminosity of 2.3fb−1. The search is carried out using events containing one electron or muon, at least one b-tagged jet with large transverse momentum, at least one jet in the forward region of the detector, and missing transverse momentum. No excess over the standard model prediction is observed. Upper limits are placed on the production cross section of heavy exotic quarks: a T quark with a charge of 2/3, and a Y quark with a charge of −4/3. For Y quarks with coupling of 0.5 and B(Y→bW)=100%, the observed (expected) lower mass limits are 1.40 (1.0)TeV. This is the most stringent limit to date on the single production of the Y vector-like quark.

AB - A search is presented for a heavy vector-like quark, decaying into a b quark and a W boson, which is produced singly in association with a light flavor quark and a b quark. The analysis is performed using a data sample of proton–proton collisions at a center-of-mass energy of s=13TeV collected at the LHC in 2015. The data set used in the analysis corresponds to an integrated luminosity of 2.3fb−1. The search is carried out using events containing one electron or muon, at least one b-tagged jet with large transverse momentum, at least one jet in the forward region of the detector, and missing transverse momentum. No excess over the standard model prediction is observed. Upper limits are placed on the production cross section of heavy exotic quarks: a T quark with a charge of 2/3, and a Y quark with a charge of −4/3. For Y quarks with coupling of 0.5 and B(Y→bW)=100%, the observed (expected) lower mass limits are 1.40 (1.0)TeV. This is the most stringent limit to date on the single production of the Y vector-like quark.

KW - CMS

KW - Physics

UR - https://www.scopus.com/pages/publications/85025835301

U2 - 10.1016/j.physletb.2017.07.022

DO - 10.1016/j.physletb.2017.07.022

M3 - Article

AN - SCOPUS:85025835301

SN - 0370-2693

VL - 772

SP - 634

EP - 656

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

Search for single production of vector-like quarks decaying into a b quark and a W boson in proton–proton collisions at s=13TeV

Abstract

Bibliographical note

Funding

Keywords

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