[논문]Measurement of strange baryon–antibaryon interactions with femtoscopic correlations

Acharya, S.; Adamová; , D.; Adhya, S.P.; Adler, A.; Adolfsson, J.; Aggarwal, M.M.; Aglieri Rinella, G.; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahmad, S.; Ahn, S.U.; Aiola, S.; Akindinov, A.; Al-Turany, M.; Alam, S.N.; Albuquerque, D.S.D.; Aleksandrov, D.; Alessandro, B.; Alfanda, H.M.; Alfaro Molina, R.; Ali, B.; Ali, Y.; Alici, A.; Alkin, A.; Alme, J.; Alt, T.; Altenkamper, L.; Altsybeev, I.; Anaam, M.N.; Andrei, C.; Andreou, D.; Andrews, H.A.; Andronic, A.; Angeletti, M.; Anguelov, V.; Anson, C.; Antič; ić; , T.; Antinori, F.; Antonioli, P.; Anwar, R.; Apadula, N.; Aphecetche, L.; Appelshä; user, H.; Arcelli, S.; Arnaldi, R.; Arratia, M.; Arsene, I.C.; Arslandok, M.; Augustinus, A.; Averbeck, R.; Aziz, S.; Azmi, M.D.; Badalà; , A.; Baek, Y.W.; Bagnasco, S.; Bailhache, R.; Bala, R.; Baldisseri, A.; Ball, M.; Baral, R.C.; Barbera, R.; Barioglio, L.; Barnafö; ldi, G.G.; Barnby, L.S.; Barret, V.; Ba

doi:10.1016/j.physletb.2020.135223

[해외논문] Measurement of strange baryon–antibaryon interactions with femtoscopic correlations 원문보기

Physics letters: B, v.802, 2020년, pp.135223 -

Acharya, S. (Variable Energy Cyclotron Centre, Homi Bhabha National Institute) , Adamová, D. (Nuclear Physics Institute of the Czech Academy of Sciences) , Adhya, S.P. (Variable Energy Cyclotron Centre, Homi Bhabha National Institute) , Adler, A. (Johann-Wolfgang-Goethe Universitä) , Adolfsson, J. (t, Frankfurt Institut fü) , Aggarwal, M.M. (r Informatik, Fachbereich Informatik und Mathematik) , Aglieri Rinella, G. (Lund University Department of Physics, Division of Particle Physics) , Agnello, M. (Physics Department, Panjab University) , Agrawal, N. (European Organization for Nuclear Research (CERN)) , Ahammed, Z. (Dipartimento DISAT del Politecnico, Sezione INFN) , Ahmad, S. (Centro Fermi –) , Ahn, S.U. (Museo Storico della Fisica e Centro Studi e Ricerche “Enrico Fermi”) , Aiola, S. (Variable Energy Cyclotron Centre, Homi Bhabha National Institute) , Akindinov, A. (Department of Physics, Aligarh Muslim Un) , Al-Turany, M. , Alam, S.N. , Albuquerque, D.S.D. , Aleksandrov, D. , Alessandro, B. , Alfanda, H.M. , Alfaro Molina, R. , Ali, B. , Ali, Y. , Alici, A. , Alkin, A. , Alme, J. , Alt, T. , Altenkamper, L. , Altsybeev, I. , Anaam, M.N. , Andrei, C. , Andreou, D. , Andrews, H.A. , Andronic, A. , Angeletti, M. , Anguelov, V. , Anson, C. , Antičić, T. , Antinori, F. , Antonioli, P. , Anwar, R. , Apadula, N. , Aphecetche, L. , Appelshäuser, H. , Arcelli, S. , Arnaldi, R. , Arratia, M. , Arsene, I.C. , Arslandok, M. , Augustinus, A. , Averbeck, R. , Aziz, S. , Azmi, M.D. , Badalà, A. , Baek, Y.W. , Bagnasco, S. , Bailhache, R. , Bala, R. , Baldisseri, A. , Ball, M. , Baral, R.C. , Barbera, R. , Barioglio, L. , Barnaföldi, G.G. , Barnby, L.S. , Barret, V. , Ba

Abstract ▼ AI-Helper

Abstract Two-particle correlation functions were measured for p p ‾ , p Λ ‾ , p ‾ Λ , and Λ Λ ‾ pairs in Pb–Pb collisions at s NN = 2.76 TeV and s NN = 5.02 TeV recorded by the ALICE detector. From a simultaneous fit to all obtained correlation functions, real and imaginary components of the scattering lengths, as well as the effective ranges, were extracted for combined p Λ ‾ and p ‾ Λ pairs and, for the first time, for Λ Λ ‾ pairs. Effective averaged scattering parameters for heavier baryon–antibaryon pairs, not measured directly, are also provided. The results reveal similarly strong interaction between measured baryon–antibaryon pairs, suggesting that they all annihilate in the same manner at the same pair relative momentum k ⁎ . Moreover, the reported significant non-zero imaginary part and negative real part of the scattering length provide motivation for future baryon–antibaryon bound state searches.

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