[논문]Investigation of the p–Σ0 interaction via femtoscopy in pp collisions

Acharya, S.; Adamová; , D.; Adler, A.; Adolfsson, J.; Aggarwal, M.M.; Aglieri Rinella, G.; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahmad, S.; Ahn, S.U.; 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.; Bai, X.; Bailhache, R.; Bala, R.; Baldisseri, A.; Ball, M.; Balouza, S.; Barbera, R.; Barioglio, L.; Barnafö; ldi, G.G.; Barnby, L.S.; Barret, V.; Bartalini, P.; Ba

doi:10.1016/j.physletb.2020.135419

[해외논문] Investigation of the p–Σ0 interaction via femtoscopy in pp collisions 원문보기

Physics letters: B, v.805, 2020년, pp.135419 -

Acharya, S. (Variable Energy Cyclotron Centre, Homi Bhabha National Institute) , Adamová, D. (Nuclear Physics Institute of the Czech Academy of Sciences) , 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”) , Akindinov, A. (Variable Energy Cyclotron Centre, Homi Bhabha National Institute) , Al-Turany, M. (Department of Physics, Aligarh Muslim University) , Alam, S.N. (Korea Institute of Science and Technology Information 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. , Bai, X. , Bailhache, R. , Bala, R. , Baldisseri, A. , Ball, M. , Balouza, S. , Barbera, R. , Barioglio, L. , Barnaföldi, G.G. , Barnby, L.S. , Barret, V. , Bartalini, P. , Ba

Abstract ▼ AI-Helper

Abstract This Letter presents the first direct investigation of the p– Σ 0 interaction, using the femtoscopy technique in high-multiplicity pp collisions at s = 13 TeV measured by the ALICE detector. The Σ 0 is reconstructed via the decay channel to Λγ, and the subsequent decay of Λ to p π − . The photon is detected via the conversion in material to e + e − pairs exploiting the capability of the ALICE detector to measure electrons at low transverse momenta. The measured p– Σ 0 correlation indicates a shallow strong interaction. The comparison of the data to several theoretical predictions obtained employing the Correlation Analysis Tool using the Schrödinger Equation (CATS) and the Lednický–Lyuboshits approach shows that the current experimental precision does not yet allow to discriminate between different models, as it is the case for the available scattering and hypernuclei data. Nevertheless, the p– Σ 0 correlation function is found to be sensitive to the strong interaction, and driven by the interplay of the different spin and isospin channels. This pioneering study demonstrates the feasibility of a femtoscopic measurement in the p– Σ 0 channel and with the expected larger data samples in LHC Run 3 and Run 4, the p– Σ 0 interaction will be constrained with high precision.

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