Skip to main content

Measurements of Higgs boson properties in the diphoton decay channel with 36 fb -1 of pp collision data at √s = 13 TeV with the ATLAS detector

Publication ,  Journal Article
Aaboud, M; Aad, G; Abbott, B; Abdinov, O; Abeloos, B; Abidi, SH; Abouzeid, OS; Abraham, NL; Abramowicz, H; Abreu, H; Abulaiti, Y; Acharya, BS ...
Published in: Physical Review D
September 18, 2018

Properties of the Higgs boson are measured in the two-photon final state using 36.1 fb-1 of proton? proton collision data recorded at ffiffi √s = 13 TeV by the ATLAS experiment at the Large Hadron Collider. Cross-section measurements for the production of a Higgs boson through gluon-gluon fusion, vectorboson fusion, and in association with a vector boson or a top-quark pair are reported. The signal strength, defined as the ratio of the observed to the expected signal yield, is measured for each of these production processes as well as inclusively. The global signal strength measurement of 0.99 ± 0.14 improves on the precision of the ATLAS measurement at √s = 7 and 8 TeV by a factor of two. Measurements of gluon-gluon fusion and vector-boson fusion productions yield signal strengths compatible with the Standard Model prediction. Measurements of simplified template cross sections, designed to quantify the different Higgs boson production processes in specific regions of phase space, are reported. The cross section for the production of the Higgs boson decaying to two isolated photons in a fiducial region closely matching the experimental selection of the photons is measured to be 55 ± 10 fb, which is in good agreement with the Standard Model prediction of 64 ± 2 fb. Furthermore, cross sections in fiducial regions enriched in Higgs boson production in vector-boson fusion or in association with large missing transverse momentum, leptons or top-quark pairs are reported. Differential and double-differential measurements are performed for several variables related to the diphoton kinematics as well as the kinematics and multiplicity of the jets produced in association with a Higgs boson. These differential cross sections are sensitive to higher order QCD corrections and properties of the Higgs boson, such as its spin and CP quantum numbers. No significant deviations from a wide array of Standard Model predictions are observed. Finally, the strength and tensor structure of the Higgs boson interactions are investigated using an effective Lagrangian, which introduces additional CP-even and CP-odd interactions. No significant new physics contributions are observed.

Duke Scholars

Altmetric Attention Stats
Dimensions Citation Stats

Published In

Physical Review D

DOI

EISSN

2470-0029

ISSN

2470-0010

Publication Date

September 18, 2018

Volume

98

Issue

5
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abidi, S. H., … Arratia, M. (2018). Measurements of Higgs boson properties in the diphoton decay channel with 36 fb -1 of pp collision data at √s = 13 TeV with the ATLAS detector. Physical Review D, 98(5). https://doi.org/10.1103/PhysRevD.98.052005
Aaboud, M., G. Aad, B. Abbott, O. Abdinov, B. Abeloos, S. H. Abidi, O. S. Abouzeid, et al. “Measurements of Higgs boson properties in the diphoton decay channel with 36 fb -1 of pp collision data at √s = 13 TeV with the ATLAS detector.” Physical Review D 98, no. 5 (September 18, 2018). https://doi.org/10.1103/PhysRevD.98.052005.
Aaboud M, Aad G, Abbott B, Abdinov O, Abeloos B, Abidi SH, et al. Measurements of Higgs boson properties in the diphoton decay channel with 36 fb -1 of pp collision data at √s = 13 TeV with the ATLAS detector. Physical Review D. 2018 Sep 18;98(5).
Aaboud, M., et al. “Measurements of Higgs boson properties in the diphoton decay channel with 36 fb -1 of pp collision data at √s = 13 TeV with the ATLAS detector.” Physical Review D, vol. 98, no. 5, Sept. 2018. Scopus, doi:10.1103/PhysRevD.98.052005.
Aaboud M, Aad G, Abbott B, Abdinov O, Abeloos B, Abidi SH, Abouzeid OS, Abraham NL, Abramowicz H, Abreu H, Abulaiti Y, Acharya BS, Adachi S, Adamczyk L, Adelman J, Adersberger M, Adye T, Affolder AA, Afik Y, Agheorghiesei C, Aguilar-Saavedra JA, Ahlen SP, Ahmadov F, Aielli G, Akatsuka S, Akerstedt H, Åkesson TPA, Akilli E, Akimov AV, Alberghi GL, Albert J, Albicocco P, Alconada Verzini MJ, Alderweireldt SC, Aleksa M, Aleksandrov IN, Alexa C, Alexander G, Alexopoulos T, Alhroob M, Ali B, Aliev M, Alimonti G, Alison J, Alkire SP, Allbrooke BMM, Allen BW, Allport PP, Aloisio A, Alonso A, Alonso F, Alpigiani C, Alshehri AA, Alstaty MI, Alvarez Gonzalez B, Álvarez Piqueras D, Alviggi MG, Amadio BT, Amaral Coutinho Y, Amelung C, Amidei D, Amor Dos Santos SP, Amoroso S, Anastopoulos C, Ancu LS, Andari N, Andeen T, Anders CF, Anders JK, Anderson KJ, Andreazza A, Andrei V, Angelidakis S, Angelozzi I, Angerami A, Anisenkov AV, Anjos N, Annovi A, Antel C, Antonelli M, Antonov A, Antrim DJ, Anulli F, Aoki M, Aperio Bella L, Arabidze G, Arai Y, Araque JP, Araujo Ferraz V, Arce ATH, Ardell RE, Arduh FA, Arguin JF, Argyropoulos S, Arik M, Armbruster AJ, Armitage LJ, Arnaez O, Arnold H, Arratia M. Measurements of Higgs boson properties in the diphoton decay channel with 36 fb -1 of pp collision data at √s = 13 TeV with the ATLAS detector. Physical Review D. 2018 Sep 18;98(5).

Published In

Physical Review D

DOI

EISSN

2470-0029

ISSN

2470-0010

Publication Date

September 18, 2018

Volume

98

Issue

5