Measurement of the p–Σ+ correlation function in pp collisions at s=13 TeV
Publication
, Journal Article
Abualrob, IJ; Acharya, S; Aglieri Rinella, G; Aglietta, L; Agnello, M; Agrawal, N; Ahammed, Z; Ahmad, S; Ahuja, I; Akbar, ZUL; Akindinov, A ...
Published in: Physics Letters Section B Nuclear Elementary Particle and High Energy Physics
March 1, 2026
In this letter, the first measurement of the femtoscopic correlation of protons and Σ+ hyperons is presented and used to study the p–Σ+ interaction. The measurement is performed with the ALICE detector in high-multiplicity triggered pp collisions at s=13 TeV. The Σ+ hyperons are reconstructed using a missing-mass approach in the decay channel to p+π0 with π0→γγ, while both Σ+ and protons are identified using a machine learning approach. These techniques result in a high reconstruction efficiency and purity, which allows the measurement of the p–Σ+ correlation function for the first time. Thanks to the high significance achieved in the p–Σ+ correlation signal, it is possible to discriminate between the predictions of different models of the N–Σ interaction and to accomplish a first determination of the p–Σ+ scattering parameters.
Duke Scholars
Published In
Physics Letters Section B Nuclear Elementary Particle and High Energy Physics
DOI
ISSN
0370-2693
Publication Date
March 1, 2026
Volume
874
Related Subject Headings
- Nuclear & Particles Physics
- 51 Physical sciences
- 49 Mathematical sciences
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Abualrob, I. J., Acharya, S., Aglieri Rinella, G., Aglietta, L., Agnello, M., Agrawal, N., … Bilandzic, A. (2026). Measurement of the p–Σ+ correlation function in pp collisions at s=13 TeV. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, 874. https://doi.org/10.1016/j.physletb.2026.140252
Abualrob, I. J., S. Acharya, G. Aglieri Rinella, L. Aglietta, M. Agnello, N. Agrawal, Z. Ahammed, et al. “Measurement of the p–Σ+ correlation function in pp collisions at s=13 TeV.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics 874 (March 1, 2026). https://doi.org/10.1016/j.physletb.2026.140252.
Abualrob IJ, Acharya S, Aglieri Rinella G, Aglietta L, Agnello M, Agrawal N, et al. Measurement of the p–Σ+ correlation function in pp collisions at s=13 TeV. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2026 Mar 1;874.
Abualrob, I. J., et al. “Measurement of the p–Σ+ correlation function in pp collisions at s=13 TeV.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, vol. 874, Mar. 2026. Scopus, doi:10.1016/j.physletb.2026.140252.
Abualrob IJ, Acharya S, Aglieri Rinella G, Aglietta L, Agnello M, Agrawal N, Ahammed Z, Ahmad S, Ahuja I, Akbar ZUL, 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, Altamura AR, Altsybeev I, Andrei C, Andreou N, Andronic A, Andronov E, Anguelov V, Antinori F, Antonioli P, Apadula N, Appelshäuser H, Arcelli S, Arnaldi R, Arneiro JGMCA, Arsene IC, Arslandok M, Augustinus A, Averbeck R, Azmi MD, Baba H, Babu ARJ, Badalà A, Bae J, Bae Y, Baek YW, 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, Barnaföldi GG, Barnby LS, Barreau E, Barret V, Barreto L, Barth K, Bartsch E, Bastid N, Batigne G, Battistini D, Batyunya B, Bauri D, Bazo Alba JL, Bearden IG, Becht P, Behera D, Behera S, Belikov I, Bella VD, Bellini F, Bellwied R, Beltran LGE, Beltran YAV, Bencedi G, Bensaoula A, Beole S, Berdnikov Y, Berdnikova A, Bergmann L, Bernardinis L, Betev L, Bhaduri PP, Bhalla T, Bhasin A, Bhattacharjee B, Bhattarai S, Bianchi L, Bielčík J, Bielčíková J, Bilandzic A. Measurement of the p–Σ+ correlation function in pp collisions at s=13 TeV. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2026 Mar 1;874.
Published In
Physics Letters Section B Nuclear Elementary Particle and High Energy Physics
DOI
ISSN
0370-2693
Publication Date
March 1, 2026
Volume
874
Related Subject Headings
- Nuclear & Particles Physics
- 51 Physical sciences
- 49 Mathematical sciences