Study of the rare decays of B⁰s and B⁰ into muon pairs from data collected during the LHC Run 1 with the ATLAS detector

Mullier, Geoffrey; Haug, Sigve; Weber, Michael; Meloni, Federico; Cervelli, Alberto; Beck, Hans Peter; Stucci, Stefania; Ereditato, Antonio (2016). Study of the rare decays of B⁰s and B⁰ into muon pairs from data collected during the LHC Run 1 with the ATLAS detector. European physical journal. C - particles and fields, 76(9) EDP Sciences 10.1140/epjc/s10052-016-4338-8

[img]
Preview
Text
art%3A10.1140%2Fepjc%2Fs10052-016-4338-8.pdf - Published Version
Available under License Creative Commons: Attribution (CC-BY).

Download (3MB) | Preview

A study of the decays B⁰s → μ⁺μ⁻ and B⁰ → μ⁺μ⁻ has been performed using data corresponding to an integrated luminosity of 25 fb⁻¹ of 7 and 8 TeV proton–proton collisions collected with the ATLAS detector during the LHC Run 1. For the B⁰ dimuon decay, an upper limit on the branching fraction is set at B(B⁰→μ⁺μ⁻) <4.2×10⁻¹⁰ at 95 % confidence level. For B⁰s, the branching fraction B(B⁰s→μ⁺μ⁻)=(0.9+1.1−0.8)×10⁻⁹ is measured. The results are consistent with the Standard Model expectation with a p value of 4.8 %, corresponding to 2.0 standard deviations.

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
500 Science > 510 Mathematics

ISSN:

1434-6044

Publisher:

EDP Sciences

Language:

English

Submitter:

Annette Krebs-Wegenast

Date Deposited:

08 Aug 2017 12:52

Last Modified:

13 Aug 2017 02:15

Publisher DOI:

10.1140/epjc/s10052-016-4338-8

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt.

BORIS DOI:

10.7892/boris.99964

URI:

https://boris.unibe.ch/id/eprint/99964

Actions (login required)

Edit item Edit item
Provide Feedback