Search for a Structure in the B⁰s π± Invariant Mass Spectrum with the ATLAS Experiment

Rimoldi, Marco; Mullier, Geoffrey; Miucci, Antonio; Merlassino, Claudia; Haug, Sigve; Weber, Michael; Meloni, Federico; Beck, Hans Peter; Ereditato, Antonio (2018). Search for a Structure in the B⁰s π± Invariant Mass Spectrum with the ATLAS Experiment. Physical review letters, 120(20) American Physical Society 10.1103/PhysRevLett.120.202007

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A search for the narrow structure, X(5568), reported by the D0 Collaboration in the decay sequence X → B⁰sπ±, B⁰s → J/ψφ, is presented. The analysis is based on a data sample recorded with the ATLAS detector at the LHC corresponding to 4.9 fb⁻¹ of pp collisions at 7 TeV and 19.5fb⁻¹ at 8 TeV. No significant signal was found. Upper limits on the number of signal events, with properties corresponding to those reported by D0, and on the X production rate relative to B⁰s mesons, ρₓ, were determined at 95% confidence level. The results are N(X) < 382 and ρₓ < 0.015 for B⁰s mesons with transverse momenta above 10 GeV, and N(X) < 356 and ρₓ < 0.016 for transverse momenta above 15 GeV. Limits are also set for potential B⁰sπ± resonances in the mass range 5550 to 5700 MeV.

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:

0031-9007

Publisher:

American Physical Society

Language:

English

Submitter:

BORIS Import LHEP

Date Deposited:

26 Jun 2019 10:25

Last Modified:

24 Oct 2019 00:56

Publisher DOI:

10.1103/PhysRevLett.120.202007

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwaehnt

BORIS DOI:

10.7892/boris.129074

URI:

https://boris.unibe.ch/id/eprint/129074

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