An amplitude analysis of A+c - pK- & pi;+ decays together with a measurement of the A+c polarization vector in semiOleptonic 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 Ao2000 thorn state are also determined. A significant A+c polarization is found. A large sensitivity of the A+c - pK-& pi;+ decay to the polarization is seen, making the amplitude model suitable for A+c polarization measurements in other systems.

Amplitude analysis of the Λc+→pK−π+ decay and Λc+ baryon polarization measurement in semileptonic beauty hadron decays / Aaij, R., Abdelmotteleb, A. s. w., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Agapopoulou, C., Aidala, C. a., Aiola, S., Ajaltouni, Z., Akar, S., Akiba, K., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Aliouche, Z., Alvarez Cartelle, P., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 108:1(2023). [10.1103/physrevd.108.012023]

Amplitude analysis of the Λc+→pK−π+ decay and Λc+ baryon polarization measurement in semileptonic beauty hadron decays

Casse, G.;Sarti, A.;
2023

Abstract

An amplitude analysis of A+c - pK- & pi;+ decays together with a measurement of the A+c polarization vector in semiOleptonic 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 Ao2000 thorn state are also determined. A significant A+c polarization is found. A large sensitivity of the A+c - pK-& pi;+ decay to the polarization is seen, making the amplitude model suitable for A+c polarization measurements in other systems.
2023
B Physics, Branching fraction, Charm Physics, Hadron-Hadron Scattering
01 Pubblicazione su rivista::01a Articolo in rivista
Amplitude analysis of the Λc+→pK−π+ decay and Λc+ baryon polarization measurement in semileptonic beauty hadron decays / Aaij, R., Abdelmotteleb, A. s. w., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Agapopoulou, C., Aidala, C. a., Aiola, S., Ajaltouni, Z., Akar, S., Akiba, K., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Aliouche, Z., Alvarez Cartelle, P., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 108:1(2023). [10.1103/physrevd.108.012023]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1720456
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