Search for neutral color-octet weak-triplet scalar particles in proton-proton collisions at √s= 8TeV

The CMS Collaboration

doi:10.1007/JHEP09(2015)201

Search for neutral color-octet weak-triplet scalar particles in proton-proton collisions at √s= 8TeV

The CMS Collaboration

Physics and Astronomy (Twin Cities)

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

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Abstract

Abstract: A search for pair production of neutral color-octet weak-triplet scalar particles (Θ⁰) is performed in processes where one Θ⁰ decays to a pair of b quark jets and the other to a Z boson plus a jet, with the Z boson decaying to a pair of electrons or muons. The search is performed with data collected by the CMS experiment at the CERN LHC corresponding to an integrated luminosity of 19.7 fb⁻¹ of proton-proton collisions at √s = 8TeV. The number of observed events is found to be in agreement with the standard model predictions. The 95% confidence level upper limit on the product of the cross section and branching fraction is obtained as a function of the Θ⁰ mass. The 95% confidence level lower bounds on the Θ⁰ mass are found to be 623 and 426 GeV, for two different octo-triplet theoretical scenarios. These are the first direct experimental bounds on particles predicted by the octo-triplet model.

Original language	English (US)
Article number	201
Journal	Journal of High Energy Physics
Volume	2015
Issue number	9
DOIs	https://doi.org/10.1007/JHEP09(2015)201
State	Published - Sep 1 2015

Bibliographical note

Publisher Copyright:
© 2015, The Author(s).

Keywords

Exotics
Hadron-Hadron Scattering

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@article{887a4dfa738846bf82cb49c33abdcba3,

title = "Search for neutral color-octet weak-triplet scalar particles in proton-proton collisions at √s= 8TeV",

abstract = "Abstract: A search for pair production of neutral color-octet weak-triplet scalar particles (Θ0) is performed in processes where one Θ0 decays to a pair of b quark jets and the other to a Z boson plus a jet, with the Z boson decaying to a pair of electrons or muons. The search is performed with data collected by the CMS experiment at the CERN LHC corresponding to an integrated luminosity of 19.7 fb−1 of proton-proton collisions at √s = 8TeV. The number of observed events is found to be in agreement with the standard model predictions. The 95% confidence level upper limit on the product of the cross section and branching fraction is obtained as a function of the Θ0 mass. The 95% confidence level lower bounds on the Θ0 mass are found to be 623 and 426 GeV, for two different octo-triplet theoretical scenarios. These are the first direct experimental bounds on particles predicted by the octo-triplet model.",

keywords = "Exotics, Hadron-Hadron Scattering",

author = "{The CMS collaboration}, {CMS collaboration} and V. Khachatryan 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 J. Er{\"o} and M. Flechl and M. Friedl and R. Fr{\"u}hwirth and Ghete, {V. M.} and C. Hartl and N. H{\"o}rmann and J. Hrubec and M. Jeitler and V. Kn{\"u}nz and A. K{\"o}nig and M. Krammer and I. Kr{\"a}tschmer and D. Liko and T. Matsushita and I. Mikulec and D. Rabady and B. Rahbaran and H. Rohringer and J. Schieck and R. Sch{\"o}fbeck and J. Strauss and W. Treberer-Treberspurg and W. Waltenberger and Wulz, {C. E.} and V. Mossolov and N. Shumeiko and {Suarez Gonzalez}, J. and S. Alderweireldt and T. Cornelis and {De Wolf}, {E. A.} and X. Janssen and A. Knutsson and J. Lauwers and S. Luyckx and Chatterjee, {R. M.} and Y. Kubota and J. Mans and S. Nourbakhsh and N. Ruckstuhl and R. Rusack",

note = "Publisher Copyright: {\textcopyright} 2015, The Author(s).",

year = "2015",

month = sep,

day = "1",

doi = "10.1007/JHEP09(2015)201",

language = "English (US)",

volume = "2015",

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T1 - Search for neutral color-octet weak-triplet scalar particles in proton-proton collisions at √s= 8TeV

AU - The CMS Collaboration

AU - Khachatryan, V.

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 - Erö, J.

AU - Flechl, M.

AU - Friedl, M.

AU - Frühwirth, R.

AU - Ghete, V. M.

AU - Hartl, C.

AU - Hörmann, N.

AU - Hrubec, J.

AU - Jeitler, M.

AU - Knünz, V.

AU - König, A.

AU - Krammer, M.

AU - Krätschmer, I.

AU - Liko, D.

AU - Matsushita, T.

AU - Mikulec, I.

AU - Rabady, D.

AU - Rahbaran, B.

AU - Rohringer, H.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Strauss, J.

AU - Treberer-Treberspurg, W.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Mossolov, V.

AU - Shumeiko, N.

AU - Suarez Gonzalez, J.

AU - Alderweireldt, S.

AU - Cornelis, T.

AU - De Wolf, E. A.

AU - Janssen, X.

AU - Knutsson, A.

AU - Lauwers, J.

AU - Luyckx, S.

AU - Chatterjee, R. M.

AU - Kubota, Y.

AU - Mans, J.

AU - Nourbakhsh, S.

AU - Ruckstuhl, N.

AU - Rusack, R.

PY - 2015/9/1

Y1 - 2015/9/1

N2 - Abstract: A search for pair production of neutral color-octet weak-triplet scalar particles (Θ0) is performed in processes where one Θ0 decays to a pair of b quark jets and the other to a Z boson plus a jet, with the Z boson decaying to a pair of electrons or muons. The search is performed with data collected by the CMS experiment at the CERN LHC corresponding to an integrated luminosity of 19.7 fb−1 of proton-proton collisions at √s = 8TeV. The number of observed events is found to be in agreement with the standard model predictions. The 95% confidence level upper limit on the product of the cross section and branching fraction is obtained as a function of the Θ0 mass. The 95% confidence level lower bounds on the Θ0 mass are found to be 623 and 426 GeV, for two different octo-triplet theoretical scenarios. These are the first direct experimental bounds on particles predicted by the octo-triplet model.

AB - Abstract: A search for pair production of neutral color-octet weak-triplet scalar particles (Θ0) is performed in processes where one Θ0 decays to a pair of b quark jets and the other to a Z boson plus a jet, with the Z boson decaying to a pair of electrons or muons. The search is performed with data collected by the CMS experiment at the CERN LHC corresponding to an integrated luminosity of 19.7 fb−1 of proton-proton collisions at √s = 8TeV. The number of observed events is found to be in agreement with the standard model predictions. The 95% confidence level upper limit on the product of the cross section and branching fraction is obtained as a function of the Θ0 mass. The 95% confidence level lower bounds on the Θ0 mass are found to be 623 and 426 GeV, for two different octo-triplet theoretical scenarios. These are the first direct experimental bounds on particles predicted by the octo-triplet model.

KW - Exotics

KW - Hadron-Hadron Scattering

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UR - http://www.scopus.com/inward/citedby.url?scp=84943751990&partnerID=8YFLogxK

U2 - 10.1007/JHEP09(2015)201

DO - 10.1007/JHEP09(2015)201

M3 - Article

AN - SCOPUS:84943751990

SN - 1126-6708

VL - 2015

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 9

M1 - 201

ER -

Search for neutral color-octet weak-triplet scalar particles in proton-proton collisions at √s= 8TeV

Abstract

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Keywords

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