Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/131830
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Evidence for Higgs boson decays to a low-mass dilepton system and a photon in pp collisions at √s=13 TeV with the ATLAS detector |
Other Titles: | Evidence for Higgs boson decays to a low-mass dilepton system and a photon in pp collisions at root s=13 TeV with the ATLAS detector |
Author: | Aad, G. Abbott, B. Abbott, D.C. Abed Abud, A. Abeling, K. Abhayasinghe, D.K. Abidi, S.H. AbouZeid, O.S. Abraham, N.L. Abramowicz, H. Abreu, H. Abulaiti, Y. Abusleme Hoffman, A.C. Acharya, B.S. Achkar, B. Adam, L. Adam Bourdarios, C. Adamczyk, L. Adamek, L. Adelman, J. et al. |
Citation: | Physics Letters B: Nuclear Physics and Particle Physics, 2021; 819:136412-1-136412-22 |
Publisher: | Elsevier |
Issue Date: | 2021 |
ISSN: | 0370-2693 1873-2445 |
Statement of Responsibility: | G. Aad, B. Abbott, D.C. Abbot ... Paul Jackson ... Harish Potti ... Martin White ... et al. |
Abstract: | A search for the Higgs boson decaying into a photon and a pair of electrons or muons with an invariant mass mll<30 GeV is presented. The analysis is performed using 139 fb−1of proton–proton collision data, produced by the LHC at a centre-of-mass energy of 13 TeV and collected by the ATLAS experiment. Evidence for the H→ll γprocess is found with a significance of 3.2 over the background-only hypothesis, compared to an expected significance of 2.1 for the Standard Model prediction. The best-fit value of the signal-strength parameter, defined as the ratio of the observed signal yield to the one expected in the Standard Model, is μ =1.5 ±0.5. The Higgs boson production cross-section times the H→llγbranching ratio for mll<30 GeV is determined to be 8.7+2.8−2.7fb |
Rights: | ©2021 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP |
DOI: | 10.1016/j.physletb.2021.136412 |
Published version: | http://dx.doi.org/10.1016/j.physletb.2021.136412 |
Appears in Collections: | Aurora harvest 8 Physics publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
hdl_131830.pdf | 1.13 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.