A search is performed for narrow resonances decaying to final states of two jets, with at least one jet originating from a 𝑏 quark, in proton-proton collisions at √𝑠=13  TeV. The data set corresponds to an integrated luminosity of 138  fb−1 collected with the CMS detector at the LHC. Jets originating from energetic 𝑏 hadrons are identified through a 𝑏-tagging algorithm that utilizes a deep neural network or the presence of a muon inside a jet. The invariant mass spectrum of jet pairs is well described by a smooth parametrization and no evidence for the production of new particles is observed. Upper limits on the production cross section are set for excited 𝑏 quarks and other resonances decaying to dijet final states containing 𝑏 quarks. These limits exclude at 95% confidence level models of 𝑍′ bosons with masses from 1.8 TeV to 2.4 TeV and of excited 𝑏 quarks with masses from 1.8 TeV to 4.0 TeV. This is the most stringent exclusion of excited 𝑏 quarks to date.

Search for narrow resonances in the b-tagged dijet mass spectrum in proton-proton collisions at √s = 13 TeV / Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Chatterjee, S., Damanakis, K., Dragicevic, M., Del Valle, A.E., Frühwirth, R., Jeitler, M., Krammer, N., Lechner, L., Liko, D., Mikulec, I., Paulitsch, P., Pitters, F. M., Schieck, J., Schöfbeck, R., Schwarz, D., Templ, S., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 108:1(2023), pp. 1-22. [10.1103/physrevd.108.012009]

Search for narrow resonances in the b-tagged dijet mass spectrum in proton-proton collisions at √s = 13 TeV

Del Re, D.;Organtini, G.;Paramatti, R.;Quaranta, C.;Rahatlou, S.;Santanastasio, F.;
2023

Abstract

A search is performed for narrow resonances decaying to final states of two jets, with at least one jet originating from a 𝑏 quark, in proton-proton collisions at √𝑠=13  TeV. The data set corresponds to an integrated luminosity of 138  fb−1 collected with the CMS detector at the LHC. Jets originating from energetic 𝑏 hadrons are identified through a 𝑏-tagging algorithm that utilizes a deep neural network or the presence of a muon inside a jet. The invariant mass spectrum of jet pairs is well described by a smooth parametrization and no evidence for the production of new particles is observed. Upper limits on the production cross section are set for excited 𝑏 quarks and other resonances decaying to dijet final states containing 𝑏 quarks. These limits exclude at 95% confidence level models of 𝑍′ bosons with masses from 1.8 TeV to 2.4 TeV and of excited 𝑏 quarks with masses from 1.8 TeV to 4.0 TeV. This is the most stringent exclusion of excited 𝑏 quarks to date.
2023
LHC; CMS; search beyond standard model; dijet final state
01 Pubblicazione su rivista::01a Articolo in rivista
Search for narrow resonances in the b-tagged dijet mass spectrum in proton-proton collisions at √s = 13 TeV / Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Chatterjee, S., Damanakis, K., Dragicevic, M., Del Valle, A.E., Frühwirth, R., Jeitler, M., Krammer, N., Lechner, L., Liko, D., Mikulec, I., Paulitsch, P., Pitters, F. M., Schieck, J., Schöfbeck, R., Schwarz, D., Templ, S., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 108:1(2023), pp. 1-22. [10.1103/physrevd.108.012009]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1720148
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