Cover Image

Amplitude analysis and branching fraction measurement of B+ → D∗−D+ s π+ decays

The decays of the B+ meson to the final state D∗−D+ s π+ are studied in protonproton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13TeV, corresponding to a total integrated luminosity of 9 fb−1. The ratio of branching fractions of the B+ → D∗−D+ s π+ and B0...

Full description

Saved in:
Bibliographic Details
Main Authors: Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Carus, Leon (Author) , Caspary, Rowina (Author) , Celani, Sara (Author) , Cocha Toapaxi, Carlos (Author) , De Cian, Michel (Author) , Dittmann, Lucas (Author) , Esen, Sevda (Author) , Frau, Giulia (Author) , Günther, Paul André (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Herrero Gascón, Paula (Author) , Langenbruch, Christoph (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Morgenthaler, Maurice Pierre (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) , Zhao, Ya (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 21 August 2024
In: Journal of high energy physics
Year: 2024, Issue: 8, Pages: 1-40
ISSN:1029-8479
DOI:10.1007/JHEP08(2024)165
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1007/JHEP08(2024)165
Get full text
Author Notes:The LHCb collaboration*
Description
Summary:The decays of the B+ meson to the final state D∗−D+ s π+ are studied in protonproton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13TeV, corresponding to a total integrated luminosity of 9 fb−1. The ratio of branching fractions of the B+ → D∗−D+ s π+ and B0 → D∗−D+ s decays is measured to be 0.173 ± 0.006 ± 0.010, where the first uncertainty is statistical and the second is systematic. Using partially reconstructed D∗+ s → D+ s γ and D+ s π0 decays, the ratio of branching fractions between the B+ → D∗−D∗+ s π+ and B+ → D∗−D+ s π+ decays is determined as 1.31±0.07±0.14. An amplitude analysis of the B+ → D∗−D+ s π+ decay is performed for the first time, revealing dominant contributions from known excited charm resonances decaying to the D∗−π+ final state. No significant evidence of exotic contributions in the D+ s π+ or D∗−D+ s channels is found. The fit fraction of the scalar state T∗ c¯s0(2900)++ observed in the B+ → D−D+ s π+ decay is determined to be less than 2.3% at a 90% confidence level.
Item Description:*The LHCb collaboration: R. Aaij, S. Bachmann, L. Carus, R. Caspary, S. Celani, C. Cocha Toapaxi, M. De Cian, L. Dittmann, S. Esen, G. Frau, P.A. Günther, X. Han, S. Hansmann-Menzemer, P. Herrero Gascon, C. Langenbruch, B. Leverington, J. Marks, M.P. Morgenthaler, S.R. Roy, M. Ruiz Diaz, G. Tuci, L.H. Uecker, D.J. Unverzagt, U. Uwer, L. Witola, Y. Zhao, A. Zhelezov [und sehr viele weitere Personen]
Gesehen am 10.09.2025
Im Titel sind die Pluszeichen, das Minuszeichen und das Tropfensternchen [ast] hochgestellt sowie der Buchstabe "s" tiefgestellt
Physical Description:Online Resource
ISSN:1029-8479
DOI:10.1007/JHEP08(2024)165

Similar Items