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Angular and CP-Violation Analyses of B - → D ⁎ + l - ν - l Decays at Hadron Collider Experiments
Author
Source
Advances in High Energy Physics
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-08-28
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
The B - → D ⁎ + l - ν - l branching fractions ratio between muon and tau lepton decay modes R ( D ⁎ ) has shown intriguing discrepancies between the Standard Model prediction and measurements performed at BaBar, Belle, and LHCb experiments, a possible sign of beyond the Standard Model physics.
Theoretical studies show how observables related to the B - → D ⁎ + l - ν - l differential decay distribution can be used to further constrain New Physics contributions, but their experimental measurements are lacking to date.
This article proposes the measurement of B - → D ⁎ + l - ν - l angular and C P -violating observables at hadron collider experiments, by exploiting approximate reconstruction algorithms using information from detectable final-state particles only.
The resolution on the phase space variables is studied using B - → D ⁎ + l - ν - l decays simulated in a forward detector geometry like LHCb.
A method to correct the observable values for the reconstruction inaccuracies based on detector simulation is successfully tested on simulated data and the decrease in precision with respect to a perfect reconstruction is evaluated.
The D ⁎ + longitudinal polarization fraction and the A T ( 2 ) C P -violating observable can be measured losing a factor of 2 and 5 in precision, respectively.
The extraction of angular distributions from the template fit selecting B - → D ⁎ + l - ν - l decays and associated systematic uncertainties are also discussed.
American Psychological Association (APA)
Marangotto, Daniele. 2019. Angular and CP-Violation Analyses of B - → D ⁎ + l - ν - l Decays at Hadron Collider Experiments. Advances in High Energy Physics،Vol. 2019, no. 2019, pp.1-16.
https://search.emarefa.net/detail/BIM-1118292
Modern Language Association (MLA)
Marangotto, Daniele. Angular and CP-Violation Analyses of B - → D ⁎ + l - ν - l Decays at Hadron Collider Experiments. Advances in High Energy Physics No. 2019 (2019), pp.1-16.
https://search.emarefa.net/detail/BIM-1118292
American Medical Association (AMA)
Marangotto, Daniele. Angular and CP-Violation Analyses of B - → D ⁎ + l - ν - l Decays at Hadron Collider Experiments. Advances in High Energy Physics. 2019. Vol. 2019, no. 2019, pp.1-16.
https://search.emarefa.net/detail/BIM-1118292
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1118292