Measurement of the cross section for electroweak production of a Z boson, a photon and two jets in proton-proton collisions at s$$ \sqrt{\mathrm{s}} $$ = 13 TeV and constraints on anomalous quartic couplings
Abstract A measurement is presented of the cross section for electroweak production of a Z boson and a photon in association with two jets (Zγjj) in proton-proton collisions. The Z boson candidates are selected through their decay into a pair of electrons or muons. The process of interest, electr...
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| Format: | Article |
| Language: | English |
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Springer Berlin Heidelberg
2021
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| Online Access: | https://hdl.handle.net/1721.1/131708 |
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| author | Sirunyan, A. M Tumasyan, A. Adam, W. Ambrogi, F. Bergauer, T. Brandstetter, J. Dragicevic, M. Erö, J. Escalante Del Valle, A. Flechl, M. Frühwirth, R. Jeitler, M. Krammer, N. Krätschmer, I. Liko, D. Madlener, T. Mikulec, I. Rad, N. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Sirunyan, A. M Tumasyan, A. Adam, W. Ambrogi, F. Bergauer, T. Brandstetter, J. Dragicevic, M. Erö, J. Escalante Del Valle, A. Flechl, M. Frühwirth, R. Jeitler, M. Krammer, N. Krätschmer, I. Liko, D. Madlener, T. Mikulec, I. Rad, N. |
| author_sort | Sirunyan, A. M |
| collection | MIT |
| description | Abstract
A measurement is presented of the cross section for electroweak production of a Z boson and a photon in association with two jets (Zγjj) in proton-proton collisions. The Z boson candidates are selected through their decay into a pair of electrons or muons. The process of interest, electroweak Zγjj production, is isolated by selecting events with a large dijet mass and a large pseudorapidity gap between the two jets. The measurement is based on data collected at the CMS experiment at s$$ \sqrt{s} $$ = 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. The observed significance of the signal is 3.9 standard deviations, where a significance of 5.2 standard deviations is expected in the standard model. These results are combined with published results by CMS at s$$ \sqrt{s} $$ = 8 TeV, which leads to observed and expected respective significances of 4.7 and 5.5 standard deviations. From the 13 TeV data, a value is obtained for the signal strength of electroweak Zγjj production and bounds are given on quartic vector boson interactions in the framework of dimension-eight effective field theory operators. |
| first_indexed | 2024-09-23T09:12:45Z |
| format | Article |
| id | mit-1721.1/131708 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:12:45Z |
| publishDate | 2021 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/1317082023-12-22T19:01:13Z Measurement of the cross section for electroweak production of a Z boson, a photon and two jets in proton-proton collisions at s$$ \sqrt{\mathrm{s}} $$ = 13 TeV and constraints on anomalous quartic couplings Sirunyan, A. M Tumasyan, A. Adam, W. Ambrogi, F. Bergauer, T. Brandstetter, J. Dragicevic, M. Erö, J. Escalante Del Valle, A. Flechl, M. Frühwirth, R. Jeitler, M. Krammer, N. Krätschmer, I. Liko, D. Madlener, T. Mikulec, I. Rad, N. Massachusetts Institute of Technology. Department of Physics Abstract A measurement is presented of the cross section for electroweak production of a Z boson and a photon in association with two jets (Zγjj) in proton-proton collisions. The Z boson candidates are selected through their decay into a pair of electrons or muons. The process of interest, electroweak Zγjj production, is isolated by selecting events with a large dijet mass and a large pseudorapidity gap between the two jets. The measurement is based on data collected at the CMS experiment at s$$ \sqrt{s} $$ = 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. The observed significance of the signal is 3.9 standard deviations, where a significance of 5.2 standard deviations is expected in the standard model. These results are combined with published results by CMS at s$$ \sqrt{s} $$ = 8 TeV, which leads to observed and expected respective significances of 4.7 and 5.5 standard deviations. From the 13 TeV data, a value is obtained for the signal strength of electroweak Zγjj production and bounds are given on quartic vector boson interactions in the framework of dimension-eight effective field theory operators. 2021-09-20T17:29:49Z 2021-09-20T17:29:49Z 2020-06-10 2020-06-26T13:26:32Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/131708 Journal of High Energy Physics. 2020 Jun 10;2020(6):76 PUBLISHER_CC en https://doi.org/10.1007/JHEP06(2020)076 Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ The Author(s) application/pdf Springer Berlin Heidelberg Springer Berlin Heidelberg |
| spellingShingle | Sirunyan, A. M Tumasyan, A. Adam, W. Ambrogi, F. Bergauer, T. Brandstetter, J. Dragicevic, M. Erö, J. Escalante Del Valle, A. Flechl, M. Frühwirth, R. Jeitler, M. Krammer, N. Krätschmer, I. Liko, D. Madlener, T. Mikulec, I. Rad, N. Measurement of the cross section for electroweak production of a Z boson, a photon and two jets in proton-proton collisions at s$$ \sqrt{\mathrm{s}} $$ = 13 TeV and constraints on anomalous quartic couplings |
| title | Measurement of the cross section for electroweak production of a Z boson, a photon and two jets in proton-proton collisions at s$$ \sqrt{\mathrm{s}} $$ = 13 TeV and constraints on anomalous quartic couplings |
| title_full | Measurement of the cross section for electroweak production of a Z boson, a photon and two jets in proton-proton collisions at s$$ \sqrt{\mathrm{s}} $$ = 13 TeV and constraints on anomalous quartic couplings |
| title_fullStr | Measurement of the cross section for electroweak production of a Z boson, a photon and two jets in proton-proton collisions at s$$ \sqrt{\mathrm{s}} $$ = 13 TeV and constraints on anomalous quartic couplings |
| title_full_unstemmed | Measurement of the cross section for electroweak production of a Z boson, a photon and two jets in proton-proton collisions at s$$ \sqrt{\mathrm{s}} $$ = 13 TeV and constraints on anomalous quartic couplings |
| title_short | Measurement of the cross section for electroweak production of a Z boson, a photon and two jets in proton-proton collisions at s$$ \sqrt{\mathrm{s}} $$ = 13 TeV and constraints on anomalous quartic couplings |
| title_sort | measurement of the cross section for electroweak production of a z boson a photon and two jets in proton proton collisions at s sqrt mathrm s 13 tev and constraints on anomalous quartic couplings |
| url | https://hdl.handle.net/1721.1/131708 |
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