Počet záznamů: 1
Investigating the role of strangeness in baryon-antibaryon annihilation at the LHC
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SYSNO ASEP 0559106 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Investigating the role of strangeness in baryon-antibaryon annihilation at the LHC Tvůrce(i) Acharya, S. (IN)
Adamová, Dagmar (UJF-V) RID, ORCID, SAI
Adler, A. (DE)
Adolfsson, J. (SE)
Bielčík, J. (CZ)
Bielčíková, Jana (UJF-V) RID, ORCID, SAI
Broz, M. (CZ)
Contreras, J. G. (CZ)
Herman, T. (CZ)
Horák, D. (CZ)
Isakov, Artem (UJF-V) ORCID, SAI
Kotliarov, Artem (UJF-V) ORCID, SAI
Křížek, Filip (UJF-V) RID, ORCID, SAI
Křížková Gajdošová, K. (CZ)
Kushpil, Svetlana (UJF-V) RID, ORCID, SAI
Lavička, R. (CZ)
Mareš, Jiří A. (FZU-D) RID, ORCID
Petráček, V. (CZ)
Šafařík, K. (CZ)
Šumbera, Michal (UJF-V) RID, ORCID, SAI
Torres, S. R. (CZ)
Trzeciak, B. A. (CZ)
Závada, Petr (FZU-D) RID, ORCIDCelkový počet autorů 1022 Číslo článku 137060 Zdroj.dok. Physics Letters. B. - : Elsevier - ISSN 0370-2693
Roč. 829, JUN (2022)Poč.str. 15 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova ALICE collaboration ; heavy ion experiments Obor OECD Nuclear physics CEP LTT17018 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Výzkumná infrastruktura CERN-CZ II - 90104 - Fyzikální ústav AV ČR, v. v. i. Způsob publikování Open access Institucionální podpora FZU-D - RVO:68378271 ; UJF-V - RVO:61389005 UT WOS 000821534900015 EID SCOPUS 85129433834 DOI 10.1016/j.physletb.2022.137060 Anotace Annihilation dynamics plays a fundamental role in the baryon-antibaryon interaction (B-(B) over bar) at low-energy and its strength and range are crucial in the assessment of possible baryonic bound states. Experimental data on annihilation cross sections are available for the p-(p) over bar system but not in the low relative momentum region. Data regarding the B-(B) over bar interaction with strange degrees of freedom are extremely scarce, hence the modeling of the annihilation contributions is mainly based on nucleon-antinucleon (N-(N) over bar) results, when available. In this letter we present a measurement of the p-(p) over bar, p-(Lambda) over bar circle plus(p) over bar-Lambda and Lambda-(Lambda) over bar interaction using correlation functions in the relative momentum space in high-multiplicity triggered pp collisions at root s = 13 TeV recorded by ALICE at the LHC. In the p-(p) over bar system the couplings to the mesonic channels in different partial waves are extracted by adopting a coupled-channel approach with recent chi EFT potentials. The inclusion of these inelastic channels provides good agreement with the data, showing a significant presence of the annihilation term down to zero momentum. Predictions obtained using the Lednicky-Lyuboshits formula and scattering parameters obtained from heavy-ion collisions, hence mainly sensitive to elastic processes, are compared with the experimental p-(Lambda) over bar circle plus(p) over bar-Lambda and Lambda-(Lambda) over bar correlations. The model describes the Lambda-(Lambda) over bar data and underestimates the p-(Lambda) over bar circle plus(p) over bar-Lambda data in the region of momenta below 200 MeV/c. The observed deviation indicates a different contribution of annihilation channels to the two systems containing strange hadrons. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2023 Elektronická adresa https://doi.org/10.1016/j.physletb.2022.137060
Počet záznamů: 1