Searches for exclusive Higgs and ℤ boson decays into J/ψγ, ψ(2S)γ, and Υ(nS)γ at √s = 13 TeV with the ATLAS detector

Rimoldi, Marco; Mullier, Geoffrey; Miucci, Antonio; Merlassino, Claudia; Haug, Sigve; Weber, Michael; Meloni, Federico; Beck, Hans Peter; Ereditato, Antonio (2018). Searches for exclusive Higgs and ℤ boson decays into J/ψγ, ψ(2S)γ, and Υ(nS)γ at √s = 13 TeV with the ATLAS detector. Physics letters. B, 786, pp. 134-155. Elsevier 10.1016/j.physletb.2018.09.024

[img]
Preview
Text
1-s2.0-S037026931830724X-main.pdf - Published Version
Available under License Creative Commons: Attribution (CC-BY).

Download (2MB) | Preview

Searches for the exclusive decays of the Higgs and Z bosons into a J/ψ, ψ(2S), or Υ(nS) (n=1,2,3) meson and a photon are performed with a pp collision data sample corresponding to an integrated luminosity of 36.1 fb⁻¹ collected at √s = 13 TeV with the ATLAS detectorat the CERN Large Hadron Collider. No significant excess of events is observed above the expected backgrounds, and 95% confidence-level upper limits on the branching fractions of the Higgs boson decays to J/ψγ, ψ(2S)γ, and Υ(nS)γ of 3.5×10⁻⁴, 2.0×10⁻³, and (4.9, 5.9, 5.7) × 10⁻⁴, respectively, are obtained assuming Standard Model production. The corresponding 95% confidence-level upper limits for the branching fractions of the Z boson decays are 2.3×10⁻⁶, 4.5×10⁻⁶ and (2.8, 1.7, 4.8) × 10⁻⁶, respectively.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Haug, Sigve; Weber, Michael and Beck, Hans Peter

Subjects:

500 Science > 530 Physics

ISSN:

0370-2693

Publisher:

Elsevier

Language:

English

Submitter:

BORIS Import LHEP

Date Deposited:

18 Jun 2019 15:45

Last Modified:

14 Mar 2021 02:36

Publisher DOI:

10.1016/j.physletb.2018.09.024

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwaehnt

BORIS DOI:

10.7892/boris.129031

URI:

https://boris.unibe.ch/id/eprint/129031

Actions (login required)

Edit item Edit item
Provide Feedback