Amplitude Analysis of the B0 →k∗0μ+μ- Decay : Physical Review Letters
(2024) In Physical Review Letters 132(13).- Abstract
- An amplitude analysis of the B0→K∗0μ+μ- decay is presented using a dataset corresponding to an integrated luminosity of 4.7 fb-1 of pp 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... (More)
- An amplitude analysis of the B0→K∗0μ+μ- decay is presented using a dataset corresponding to an integrated luminosity of 4.7 fb-1 of pp 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. © 2024 CERN. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/314ce843-ad3c-47f6-8bfb-2fb10fc74b66
- author
- Aaij, R. ; Ruiz-Vidal, Joan LU and Zunica, G.
- author collaboration
- organization
- publishing date
- 2024
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Atomic physics, Amplitude analysis, Integrated luminosity, Invariant mass, Model prediction, Standard deviation, The standard model, Statistics
- in
- Physical Review Letters
- volume
- 132
- issue
- 13
- article number
- 131801
- publisher
- American Physical Society
- external identifiers
-
- scopus:85188998187
- pmid:38613276
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.132.131801
- language
- English
- LU publication?
- yes
- id
- 314ce843-ad3c-47f6-8bfb-2fb10fc74b66
- date added to LUP
- 2024-04-08 15:46:02
- date last changed
- 2024-07-09 03:00:10
@article{314ce843-ad3c-47f6-8bfb-2fb10fc74b66, abstract = {{An amplitude analysis of the B0→K∗0μ+μ- decay is presented using a dataset corresponding to an integrated luminosity of 4.7 fb-1 of pp 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. © 2024 CERN.}}, author = {{Aaij, R. and Ruiz-Vidal, Joan and Zunica, G.}}, issn = {{1079-7114}}, keywords = {{Atomic physics; Amplitude analysis; Integrated luminosity; Invariant mass; Model prediction; Standard deviation; The standard model; Statistics}}, language = {{eng}}, number = {{13}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{Amplitude Analysis of the B0 →k∗0μ+μ- Decay : Physical Review Letters}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.132.131801}}, doi = {{10.1103/PhysRevLett.132.131801}}, volume = {{132}}, year = {{2024}}, }