Study of the interaction between Ξ baryons and light mesons via femtoscopy at the LHC
  • Abualrob, I.J.
  • Acharya, S.
  • Aglieri, Rinella G.
  • Aglietta, L.
  • Agrawal, N.
  • ... Kim, B.
  • 외 1,033명
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초록

Meson-baryon systems with strangeness content provide a unique laboratory for investigating the strong interaction and testing theoretical models of hadron structure and dynamics. In this work, the measured correlation functions for oppositely charged Ξ-K and Ξ−π pairs obtained in high-multiplicity pp collisions at s=13 TeV at the LHC are presented. For the first time, high-precision data on the Ξ-K interaction are delivered at small relative momenta. The scattering lengths, extracted via the Lednický–Lyuboshits expression of the pair wavefunction, indicate a repulsive and a shallow attractive strong interaction for the Ξ-K and Ξ−π systems, respectively. The Ξ(1620) and Ξ(1690) states are observed in the Ξ−π correlation function and their properties, mass and width, are determined. These measurements are in agreement with other available results. Such high-precision data can help refine the understanding of these resonant states, provide stronger constraints for chirally motivated potentials, and address the key challenge of describing the coupled-channel dynamics that may give rise to molecular configurations.

키워드

FemtoscopyMeson-baryon interactionMolecular statesStrangenessStrong interactionK-P INTERACTIONSSIGMA-HYPERON PRODUCTIONCROSS-SECTIONSCHIRAL DYNAMICSCHARGE-EXCHANGEMOMENTUM RANGECOLLISIONSRESONANCEHYDROGENSTATES
제목
Study of the interaction between Ξ baryons and light mesons via femtoscopy at the LHC
저자
Abualrob, I.J.Acharya, S.Aglieri, Rinella G.Aglietta, L.Agrawal, N.Ahammed, Z.Ahmad, S.Ahuja, I.Akbar, Z.U.L.Akindinov, A.Akishina, V.Al-Turany, M.Aleksandrov, D.Alessandro, B.Alfaro, Molina R.Ali, B.Alici, A.Alkin, A.Alme, J.Alocco, G.Alt, T.Altsybeev, I.Andrei, C.Andreou, N.Andronic, A.Andronov, E.Angeletti, M.Anguelov, V.Antinori, F.Antonioli, P.Apadula, N.Appelshauser, H.Arcelli, S.Arnaldi, R.Arneiro, J.G.M.C.A.Arsene, I.C.Arslandok, M.Augustinus, A.Averbeck, R.Azmi, M.D.Baba, H.Babu, A.R.J.Badala, A.Bae, J.Bae, Y.Baek, Y.W.Bai, X.Bailhache, R.Bailung, Y.Bala, R.Baldisseri, A.Balis, B.Bangalia, S.Banoo, Z.Barbasova, V.Barile, F.Barioglio, L.Barlou, M.Barman, B.Barnafoldi, G.G.Barnby, L.S.Barreau, E.Barret, V.Barreto, L.Barth, K.Bartsch, E.Bastid, N.Batigne, G.Battistini, D.Batyunya, B.Bauri, D.Bazo, Alba J.L.Bearden, I.G.Becht, P.Behera, D.Behera, S.Belikov, I.Bella, V.D.Bellini, F.Bellwied, R.Beltran, L.G.E.Beltran, Y.A.V.Bencedi, G.Bensaoula, A.Beole, S.Berdnikov, Y.Berdnikova, 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DOI
10.1016/j.physletb.2026.140227
발행일
2026-03
유형
Article
저널명
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
874