Measurement of CP-averaged observables in the B0 -> K*0 mu+ mu- Decay

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2020_PhysRevLet_Aaij_Measurement.pdf (387.1 KB)
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URI: https://hdl.handle.net/10347/45295
E-ISSN: 1079-7114
DOI: 10.1103/PhysRevLett.125.011802

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2020-07-02

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American Physical Society
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Abstract

An angular analysis of the 𝐵0→𝐾*0⁡(→𝐾+⁡𝜋−)⁢𝜇+⁢𝜇− decay is presented using a dataset corresponding to an integrated luminosity of 4.7  fb−1 of 𝑝⁢𝑝 collision data collected with the LHCb experiment. The full set of 𝐶⁢𝑃-averaged observables are determined in bins of the invariant mass squared of the dimuon system. Contamination from decays with the 𝐾+⁢𝜋− system in an 𝑆-wave configuration is taken into account. The tension seen between the previous LHCb results and the standard model predictions persists with the new data. The precise value of the significance of this tension depends on the choice of theory nuisance parameters

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Heavy Flavor| CP| B mesons| LHCb| Hadron colliders

Bibliographic citation

R. Aaij, C. Abellán Beteta, T. Ackernley, B. Adeva, M. Adinolfi, H. Afsharnia, C. A. Aidala, S. Aiola, Z. Ajaltouni et al. (LHCb Collaboration). Measurement of 𝐶⁢𝑃-Averaged Observables in the 𝐵0→𝐾*0⁢𝜇+⁢𝜇− Decay. Phys. Rev. Lett. 125, 011802 – Published 2 July, 2020

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institutes. We acknowledge support from CERN and from the national agencies: CAPES, CNPq, FAPERJ and FINEP (Brazil); MOST and NSFC (China); CNRS/ IN2P3 (France); BMBF, DFG and MPG (Germany); INFN (Italy); NWO (Netherlands); MNiSW and NCN (Poland); MEN/IFA (Romania); MSHE (Russia); MinECo (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); DOE NP and NSF (USA). We acknowledge the computing resources that are provided by CERN, IN2P3 (France), KIT and DESY (Germany), INFN (Italy), SURF (Netherlands), PIC (Spain), GridPP (United Kingdom), RRCKI and Yandex LLC (Russia), CSCS (Switzerland), IFIN-HH (Romania), CBPF (Brazil), PL-GRID (Poland) and OSC (USA).We are indebted to the communities behind the multiple open-source software packages on which we depend. Individual groups or members have received support from AvH Foundation (Germany); EPLANET, Marie Skłodowska-Curie Actions and ERC (European Union); ANR, Labex P2IO and OCEVU, and R´egion Auvergne-Rhône-Alpes (France); Key Research Program of Frontier Sciences of CAS, CAS PIFI, and the Thousand Talents Program (China); RFBR, RSF and Yandex LLC (Russia); GVA, XuntaGal and GENCAT (Spain); the Royal Society and the Leverhulme Trust (United Kingdom).

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© 2020 CERN, for the LHCb Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license

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