Search for a new neutral gauge boson produced in association with one or two b jets and decaying into a pair of muons in proton-proton collisions at $ \sqrt{s}=13 $ TeV

A search for a new neutral gauge boson, Z′, produced in association with one or two jets, including at least one b jet, and decaying into a pair of muons is presented. The analysis uses proton-proton collision data collected with the CMS detector at $ \sqrt{s}=13 $ TeV, corresponding to an integrated luminosity of 138 fb$^{−1}$. No significant deviation from background expectations is observed. Upper limits at 95% confidence level on the product of cross section, branching fraction to dimuons, acceptance, and efficiency, from 0.2 to 2 fb, are set for Z′ boson masses between 125 and 350 GeV. Process-dependent products of acceptance and efficiency, and model-independent limits on the signal yield are provided. These are the only results to date in the 125–200 GeV mass range and the most stringent for b quark fusion production modes in the 200–350 GeV range, complementing inclusive Z′ boson searches.

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Publication Details

Journal
KITopen
Published
2026-07-24
DOI
https://doi.org/10.5445/ir/1000195577
Primary Topic
Particle physics theoretical and experimental studies
Type
article
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article

Search for a new neutral gauge boson produced in association with one or two b jets and decaying into a pair of muons in proton-proton collisions at $ \sqrt{s}=13 $ TeV

A Das, P Van Mechelen, I V Makarenko, Alves GA et al.
KITopen
Particle physics theoretical and experimental studies
article

Search for a new neutral gauge boson produced in association with one or two b jets and decaying into a pair of muons in proton-proton collisions at $ \sqrt{s}=13 $ TeV

A Das, P Van Mechelen, I V Makarenko, Alves GA, An Li, Schieck, C. Hensel, I Mikulec, C Sturm for the KaoS Collaboration, S a. Jain, K Lee, K Skovpen, V Lemaître, M Delcourt, J D'hondt, H Kwon, G W P De lentdecker, S L Bein, J Van der linden, G P Van onsem, M G Tytgat, M G Dragicevic, T Bergauer, B Clerbaux, A Tumasyan, S R J Lowette, L Thomas, N Krammer, V Makarenko, L Favart, P Vanlaer, L Lambrecht, W De paula carvalho, A Giammanco, S Van putte, S Tavernier, A Benecke, C Delaere, D Schwarz, A F Moor, M. De Coen, C.-E. Wulz, J. Lidrych, C. Mora Herrera, T. Van Laer, F. Heyen, S. Turkcapar, W. L. Aldá Júnior, G. Gokbulut, N. Van Den Bossche, M. Vanden Bemden, C. Vander Velde, D. Dobur, D. Marckx, P. S. Hussain, J. De Favereau De Jeneret, M. Jeitler, J. Knolle, A. Vilela Pereira, D. Vannerom, Y. Hong, C. Caputo, G. Bruno, H. Evard, P. Mastrapasqua, P. Gianneios, G. Correia Silva, W. Waltenberger, N. Breugelmans, E. Coelho, D. Liko, M. A. Shahzad, R. Schöfbeck, S. Chatterjee, S. Dansana, B. Bilin, M. Sonawane, A. Khalilzadeh, M. Barroso Ferreira Filho, A. O. Guzel, T. Menezes De Oliveira, A. Hayrapetyan, V. Chekhovsky, I. De Bruyn, I. S. Donertas, E. J. Tonelli Manganote, A. Bethani, W. Adam, K. Damanakis, T. Janssen, A. Malara, L. Benato, H. Brandao Malbouisson, J. W. Andrejkovic, M. Soeiro, T. T. Tran, D. Müller, L. Wezenbeek, P. Rebello Teles, F. A. Khan
article en

Abstract

A search for a new neutral gauge boson, Z′, produced in association with one or two jets, including at least one b jet, and decaying into a pair of muons is presented. The analysis uses proton-proton collision data collected with the CMS detector at $ \sqrt{s}=13 $ TeV, corresponding to an integrated luminosity of 138 fb$^{−1}$. No significant deviation from background expectations is observed. Upper limits at 95% confidence level on the product of cross section, branching fraction to dimuons, acceptance, and efficiency, from 0.2 to 2 fb, are set for Z′ boson masses between 125 and 350 GeV. Process-dependent products of acceptance and efficiency, and model-independent limits on the signal yield are provided. These are the only results to date in the 125–200 GeV mass range and the most stringent for b quark fusion production modes in the 200–350 GeV range, complementing inclusive Z′ boson searches.

KITopen
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Particle physics theoretical and experimental studies
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