| Title: |
Measurement of strange baryon–antibaryon interactions with femtoscopic correlations |
| Authors: |
Acharya, S; Adamová, D; Adhya, SP; Adler, A; Adolfsson, J; Aggarwal, MM; Rinella, G Aglieri; Agnello, M; Agrawal, N; Ahammed, Z; Ahmad, S; Ahn, SU; Aiola, S; Akindinov, A; Al-Turany, M; Alam, SN; Albuquerque, DSD; Aleksandrov, D; Alessandro, B; Alfanda, HM; Molina, R Alfaro; Ali, B; Ali, Y; Alici, A; Alkin, A; Alme, J; Alt, T; Altenkamper, L; Altsybeev, I; Anaam, MN; Andrei, C; Andreou, D; Andrews, HA; 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, IC; Arslandok, M; Augustinus, A; Averbeck, R; Aziz, S; Azmi, MD; Badalà, A; Baek, YW; Bagnasco, S; Bailhache, R; Bala, R; Baldisseri, A; Ball, M; Baral, RC; Barbera, R; Barioglio, L; Barnaföldi, GG; Barnby, LS; Barret, V; Bartalini, P; Barth, K; Bartsch, E; Bastid, N; Basu, S; Batigne, G; Batyunya, B; Batzing, PC; Bauri, D; Alba, JL Bazo; Bearden, IG; Bedda, C; Behera, NK; Belikov, I; Bellini, F; Bellwied, R; Beltran, LGE; Belyaev, V; Bencedi, G; Beole, S; Bercuci, A; Berdnikov, Y; Berenyi, D; Bertens, RA; Berzano, D; Betev, L; Bhasin, A; Bhat, IR; Bhatt, H; Bhattacharjee, B; Bianchi, A; Bianchi, L; Bianchi, N; Bielčík, J |
| Source: |
Physics Letters B, vol 802 |
| Publisher Information: |
eScholarship, University of California |
| Publication Year: |
2020 |
| Collection: |
University of California: eScholarship |
| Subject Terms: |
5106 Nuclear and Plasma Physics (for-2020); 5107 Particle and High Energy Physics (for-2020); 51 Physical Sciences (for-2020); 0105 Mathematical Physics (for); 0201 Astronomical and Space Sciences (for); 0202 Atomic; Molecular; Nuclear; Particle and Plasma Physics (for); Nuclear & Particles Physics (science-metrix); 49 Mathematical sciences (for-2020) |
| Description: |
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. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
unknown |
| Relation: |
qt9m53h9jm; https://escholarship.org/uc/item/9m53h9jm; https://escholarship.org/content/qt9m53h9jm/qt9m53h9jm.pdf |
| DOI: |
10.1016/j.physletb.2020.135223 |
| Availability: |
https://escholarship.org/uc/item/9m53h9jm; https://escholarship.org/content/qt9m53h9jm/qt9m53h9jm.pdf; https://doi.org/10.1016/j.physletb.2020.135223 |
| Rights: |
public |
| Accession Number: |
edsbas.991AC8E3 |
| Database: |
BASE |