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Amplitude analysis of the 𝐵0 → 𝐾*0⁢𝜇+⁢𝜇− decay

An amplitude analysis of the 𝐵0→𝐾*0⁢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. For the first time, the coefficients associated to short-distance physics effects, sensitive to processes beyon...

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Main Authors: Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Carus, Leon (Author) , Caspary, Rowina (Author) , Cocha Toapaxi, Carlos (Author) , De Cian, Michel (Author) , Frau, Giulia (Author) , Günther, Paul André (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Herrero Gascón, Paula (Author) , Hu, Jiangqiao (Author) , Kubat, Jakub (Author) , Langenbruch, Christoph (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Morgenthaler, Maurice Pierre (Author) , Pais, Preema (Author) , Roy, Shreya (Author) , Ruiz Diaz, Miguel (Author) , Tuci, Giulia (Author) , Uecker, Lennart Henning (Author) , Unverzagt, Daniel Joachim (Author) , Uwer, Ulrich (Author) , Wang, Chishuai (Author) , Witola, Lukas (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 28 March 2024
In: Physical review letters
Year: 2024, Volume: 132, Issue: 13, Pages: 1-13
ISSN:1079-7114
DOI:10.1103/PhysRevLett.132.131801
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevLett.132.131801
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.132.131801
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Author Notes:R. Aaij et al. (LHCb Collaboration)
Description
Summary:An amplitude analysis of the 𝐵0→𝐾*0⁢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. For the first time, the coefficients associated to short-distance physics effects, sensitive to processes beyond the standard model, are extracted directly from the data through a 𝑞2-unbinned amplitude analysis, where 𝑞2 is the 𝜇+⁢𝜇− invariant mass squared. Long-distance contributions, which originate from nonfactorizable QCD processes, are systematically investigated, and the most accurate assessment to date of their impact on the physical observables is obtained. The pattern of measured corrections to the short-distance couplings is found to be consistent with previous analyses of 𝑏- to 𝑠-quark transitions, with the largest discrepancy from the standard model predictions found to be at the level of 1.8 standard deviations. The global significance of the observed differences in the decay is 1.4 standard deviations.
Item Description:Im Text ist jeweils "0", "*", "+" und "-" hochgestellt
LHCb Collaboration: R. Aaij, S. Bachmann, L. Carus, R. Caspary, C. Cocha Toapaxi, M. De Cian, G. Frau, P.A. Günther, X. Han, S. Hansmann-Menzemer, P. Herrero Gascon, J. Hu, J. Kubat, C. Langenbruch, B. Leverington, J. Marks, M.P. Morgenthaler, P.R. Pais, S.R. Roy, M. Ruiz Diaz, G. Tuci, L.H. Uecker, D.J. Unverzagt, U. Uwer, C. Wang, L. Witola, A. Zhelezov [und viele weitere]
Gesehen am 06.12.2024
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.132.131801

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