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

2017
Authors
Sirunyan, A. M.Adžić, Petar
Ćirković, Predrag

Devetak, Damir

Đorđević, Miloš

Milošević, Jovan

Reković, Vladimir

Milenović, Predrag

Contributors
CMS CollaborationCMS Collaboration (ukupan broj autora: 2236)
Article (Published version)
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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 root s = 13 TeV collected at the LHC in 2015. The data set used in the analysis corresponds to an integrated luminosity of 2.3 fb(-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 beta(Y - GT bW) = 100%, the observed (expected) lower mass limits are 1.40 (1.0) TeV. This is the most stringent limit to da...te on the single production of the Y vector-like quark. (C) 2017 The Author(s). Published by Elsevier B.V.
Keywords:
CMS / PhysicsSource:
Physics Letters B, 2017, 772, 634-656
DOI: 10.1016/j.physletb.2017.07.022
ISSN: 0370-2693
WoS: 000411369700090
Scopus: 2-s2.0-85025835301
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VinčaTY - JOUR AU - Sirunyan, A. M. AU - Adžić, Petar AU - Ćirković, Predrag AU - Devetak, Damir AU - Đorđević, Miloš AU - Milošević, Jovan AU - Reković, Vladimir AU - Milenović, Predrag PY - 2017 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1743 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 root s = 13 TeV collected at the LHC in 2015. The data set used in the analysis corresponds to an integrated luminosity of 2.3 fb(-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 beta(Y - GT 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. (C) 2017 The Author(s). Published by Elsevier B.V. T2 - Physics Letters B T1 - Search for single production of vector-like quarks decaying into a b quark and a W boson in proton-proton collisions at root s=13 TeV VL - 772 SP - 634 EP - 656 DO - 10.1016/j.physletb.2017.07.022 ER -
@article{ author = "Sirunyan, A. M. and Adžić, Petar and Ćirković, Predrag and Devetak, Damir and Đorđević, Miloš and Milošević, Jovan and Reković, Vladimir and Milenović, Predrag", year = "2017", 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 root s = 13 TeV collected at the LHC in 2015. The data set used in the analysis corresponds to an integrated luminosity of 2.3 fb(-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 beta(Y - GT 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. (C) 2017 The Author(s). Published by Elsevier B.V.", journal = "Physics Letters B", title = "Search for single production of vector-like quarks decaying into a b quark and a W boson in proton-proton collisions at root s=13 TeV", volume = "772", pages = "634-656", doi = "10.1016/j.physletb.2017.07.022" }
Sirunyan, A. M., Adžić, P., Ćirković, P., Devetak, D., Đorđević, M., Milošević, J., Reković, V.,& Milenović, P.. (2017). Search for single production of vector-like quarks decaying into a b quark and a W boson in proton-proton collisions at root s=13 TeV. in Physics Letters B, 772, 634-656. https://doi.org/10.1016/j.physletb.2017.07.022
Sirunyan AM, Adžić P, Ćirković P, Devetak D, Đorđević M, Milošević J, Reković V, Milenović P. Search for single production of vector-like quarks decaying into a b quark and a W boson in proton-proton collisions at root s=13 TeV. in Physics Letters B. 2017;772:634-656. doi:10.1016/j.physletb.2017.07.022 .
Sirunyan, A. M., Adžić, Petar, Ćirković, Predrag, Devetak, Damir, Đorđević, Miloš, Milošević, Jovan, Reković, Vladimir, Milenović, Predrag, "Search for single production of vector-like quarks decaying into a b quark and a W boson in proton-proton collisions at root s=13 TeV" in Physics Letters B, 772 (2017):634-656, https://doi.org/10.1016/j.physletb.2017.07.022 . .