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| Verfasst von: | Acharya, Shreyasi [VerfasserIn]  |
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| | Angelov, Venelin [VerfasserIn] |
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| | Arslandok, Mesut [VerfasserIn] |
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| | Berdnikova, Anastasia [VerfasserIn] |
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| | Bergmann, Luisa [VerfasserIn] |
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| | Danisch, Meike [VerfasserIn] |
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| | Feuillard, Victor [VerfasserIn] |
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| | Glässel, Peter [VerfasserIn] |
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| | Kim, Jiyoung [VerfasserIn] |
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| | Kim, Minjung [VerfasserIn] |
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| | Köhler, Markus Konrad [VerfasserIn] |
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| | Kroesen, Martin [VerfasserIn] |
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| | López, Jorge [VerfasserIn] |
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| | Nath, Abhishek [VerfasserIn] |
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| | Pachmayer, Yvonne C. [VerfasserIn] |
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| | Reygers, Klaus [VerfasserIn] |
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| | Schicker, Rainer [VerfasserIn] |
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| | Schmah, Alexander [VerfasserIn] |
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| | Schmidt, Marten Ole [VerfasserIn] |
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| | Skorodumovs, Georgijs [VerfasserIn] |
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| | Stachel, Johanna [VerfasserIn] |
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| | Stiefelmaier, Stephan [VerfasserIn] |
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| | Völkl, Martin [VerfasserIn] |
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| | Windelband, Bernd [VerfasserIn] |
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| | Yüncü, Alperen [VerfasserIn] |
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| Titel: | Investigating the role of strangeness in baryon-antibaryon annihilation at the LHC |
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| Körperschaft: | ALICE (Körperschaft) [VerfasserIn] |
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| Verf.angabe: | ALICE collaboration* |
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| E-Jahr: | 2022 |
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| Jahr: | 4 April 2022 |
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| Umfang: | 15 S. |
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| Fussnoten: | Gesehen am 25.08.2022 ; ALICE collaboration*: S. Acharya, V. Anguelov, M. Arslandok, A. Berdnikova, L. Bergmann, M.C. Danisch, V.J.G. Feuillard, P. Glässel, J. Kim, M. Kim, M.K. Köhler, M. Kroesen, J.A. Lopez, A. Nath, Y. Pachmayer, K. Reygers, R. Schicker, A. Schmah, M.O. Schmidt, G. Skorodumovs, J. Stachel, S.F. Stiefelmaier, M.A. Völkl, B. Windelband, A. Yuncu [und 1000 weitere] |
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| Titel Quelle: | Enthalten in: Physics letters / B |
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| Ort Quelle: | Amsterdam : North-Holland Publ., 1967 |
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| Jahr Quelle: | 2022 |
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| Band/Heft Quelle: | 829(2022), Artikel-ID 137060, Seite 1-15 |
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| ISSN Quelle: | 1873-2445 |
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| Abstract: | Annihilation dynamics plays a fundamental role in the baryon-antibaryon interaction (B-B‾) 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‾ system but not in the low relative momentum region. Data regarding the B-B‾ interaction with strange degrees of freedom are extremely scarce, hence the modeling of the annihilation contributions is mainly based on nucleon-antinucleon (N-N‾) results, when available. In this letter we present a measurement of the p-p‾, p-Λ‾⊕p‾-Λ and Λ-Λ‾ interaction using correlation functions in the relative momentum space in high-multiplicity triggered pp collisions at s=13 TeV recorded by ALICE at the LHC. In the p-p‾ system the couplings to the mesonic channels in different partial waves are extracted by adopting a coupled-channel approach with recent χEFT 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 Lednický-Lyuboshits formula and scattering parameters obtained from heavy-ion collisions, hence mainly sensitive to elastic processes, are compared with the experimental p-Λ‾⊕p‾-Λ and Λ-Λ‾ correlations. The model describes the Λ-Λ‾ data and underestimates the p-Λ‾⊕p‾-Λ 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. |
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| DOI: | doi:10.1016/j.physletb.2022.137060 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext ; Verlag: https://doi.org/10.1016/j.physletb.2022.137060 |
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| | Volltext: https://www.sciencedirect.com/science/article/pii/S0370269322001940 |
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| | DOI: https://doi.org/10.1016/j.physletb.2022.137060 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| K10plus-PPN: | 1815192542 |
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| Verknüpfungen: | → Zeitschrift |
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Investigating the role of strangeness in baryon-antibaryon annihilation at the LHC / Acharya, Shreyasi [VerfasserIn]; 4 April 2022 (Online-Ressource)
