Amplitude analysis of the ?<sub>c</sub><SUP>+</SUP>- pK-p<SUP>+</SUP> decay and ?<sub>c</sub><SUP>+</SUP> baryon polarization measurement in semileptonic beauty hadron decays



Aaij, R, Abdelmotteleb, ASW, Beteta, C Abellan, Abudinen, F, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Agapopoulou, C, Aidala, CA
et al (show 1004 more authors) (2023) Amplitude analysis of the ?<sub>c</sub><SUP>+</SUP>- pK-p<SUP>+</SUP> decay and ?<sub>c</sub><SUP>+</SUP> baryon polarization measurement in semileptonic beauty hadron decays. PHYSICAL REVIEW D, 108 (1). 012023-.

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Abstract

An amplitude analysis of Λc+→pK-π+ decays together with a measurement of the Λc+ polarization vector in semiōleptonic beauty hadron decays is presented. A sample of 400 000 candidates is selected from proton-proton collisions recorded by the LHCb detector at a center-of-mass energy of 13 TeV. An amplitude model is developed and the resonance fractions as well as two- and three-body decay parameters are reported. The mass and width of the Λ(2000) state are also determined. A significant Λc+ polarization is found. A large sensitivity of the Λc+→pK-π+ decay to the polarization is seen, making the amplitude model suitable for Λc+ polarization measurements in other systems.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 18 Sep 2023 07:42
Last Modified: 20 Jun 2024 21:47
DOI: 10.1103/PhysRevD.108.012023
Open Access URL: https://journals.aps.org/prd/pdf/10.1103/PhysRevD....
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3172842