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http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/8138| Title: | Precision measurement of the Z boson invisible width in pp collisions at √s = 13 TeV |
| Authors: | CMS Collaboration Tumasyan, A. ALPANA, K. DUBE, SOURABH KANSAL, B. LAHA, A. PANDEY, S. RANE, A. RASTOGI, A. SHARMA, SEEMA et al. Dept. of Physics |
| Keywords: | CMS Z boson 2023-AUG-WEEK2 TOC-AUG-2023 2023 |
| Issue Date: | Jul-2023 |
| Publisher: | Elsevier B.V. |
| Citation: | Physics Letters B, 842, 137563. |
| Abstract: | A precise measurement of the invisible width of the Z boson produced in proton-proton collisions at a center-of-mass energy of 13 TeV is presented using data recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 36.3 fb-1. The result is obtained from a simultaneous fit to kinematic distributions for two data samples of Z boson plus jets: one dominated by Z boson decays to invisible particles and the other by Z boson decays to muon and electron pairs. The invisible width is measured to be 523 & PLUSMN; 3 (stat) & PLUSMN; 16 (syst) MeV. This result is the first precise measurement of the invisible width of the Z boson at a hadron collider, and is the single most precise direct measurement to date, competitive with the combined result of the direct measurements from the LEP experiments. |
| URI: | https://doi.org/10.1016/j.physletb.2022.137563 http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/8138 |
| ISSN: | 0370-2693 1873-2445 |
| Appears in Collections: | JOURNAL ARTICLES |
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