First study of the two-body scattering involving charm hadrons

0564406 - ÚJF 2023 RIV US eng J - Článek v odborném periodiku
Acharya, S. - Adamová, Dagmar - Adler, A. - Adolfsson, J. - Bielčík, J. - Bielčíková, Jana - Broz, M. - Contreras, J. G. - Fialová, V. - Grund, D. - Herman, T. - Horák, D. - Isakov, Artem - Kotliarov, Artem - Křížek, Filip - Křížková Gajdošová, K. - Kroupová, D. M. - Kushpil, Svetlana - Lavička, R. - Petráček, V. - Šafařík, K. - Torres, S. R. - Závada, Petr … celkem 1007 autorů
First study of the two-body scattering involving charm hadrons.
Physical Review D. Roč. 106, č. 5 (2022), č. článku 052010. ISSN 2470-0010. E-ISSN 2470-0029
Grant CEP: GA MŠMT(CZ) LTT17018
Výzkumná infrastruktura: CERN-CZ II - 90104
Institucionální podpora: RVO:68378271 ; RVO:61389005
Klíčová slova: ALICE collaboration * heavy ion experiment
Obor OECD: Nuclear physics; Particles and field physics (FZU-D)
Impakt faktor: 5, rok: 2022
Způsob publikování: Open access
https://doi.org/10.1103/PhysRevD.106.052010

This article presents the first measurement of the interaction between charm hadrons and nucleons. The two-particle momentum correlations of pD(-) and (p) over barD(+) pairs are measured by the ALICE Collaboration in high-multiplicity pp collisions at root s = 13 TeV. The data are compatible with the Coulomb-only interaction hypothesis within (1.1-1.5)sigma. The level of agreement slightly improves if an attractive nucleon (N)(D) over bar strong interaction is considered, in contrast to most model predictions which suggest an overall repulsive interaction. This measurement allows for the first time an estimation of the 68% confidence level interval for the isospin I = 0 inverse scattering length of the N (D) over bar state f(0,I=0)(-1) is an element of[-0.4, 0.9] fm(-1), assuming negligible interaction for the isospin I = 1 channel.
Trvalý link: https://hdl.handle.net/11104/0336078


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