학술논문
First study of the two-body scattering involving charm hadrons
Document Type
article
Author
Acharya, S; Adamová, D; Adler, A; Adolfsson, J; Rinella, G Aglieri; Agnello, M; Agrawal, N; Ahammed, Z; Ahmad, S; Ahn, SU; Ahuja, I; Akbar, Z; Akindinov, A; Al-Turany, M; Alam, SN; Aleksandrov, D; Alessandro, B; Alfanda, HM; Molina, R Alfaro; Ali, B; Ali, Y; Alici, A; Alizadehvandchali, N; Alkin, A; Alme, J; Alocco, G; Alt, T; Altsybeev, I; Anaam, MN; Andrei, C; Andreou, D; Andronic, A; Anguelov, V; Antinori, F; Antonioli, P; Anuj, C; Apadula, N; Aphecetche, L; Appelshäuser, H; Arcelli, S; Arnaldi, R; Arsene, IC; Arslandok, M; Augustinus, A; Averbeck, R; Aziz, S; Azmi, MD; Badalà, A; Baek, YW; Bai, X; Bailhache, R; Bailung, Y; Bala, R; Balbino, A; Baldisseri, A; Balis, B; Banerjee, D; Banoo, Z; Barbera, R; Barioglio, L; Barlou, M; Barnaföldi, GG; Barnby, LS; Barret, V; Bartels, C; Barth, K; Bartsch, E; Baruffaldi, F; Bastid, N; Basu, S; Batigne, G; Battistini, D; Batyunya, B; Bauri, D; Alba, JL Bazo; Bearden, IG; Beattie, C; Becht, P; Belikov, I; Hechavarria, ADC Bell; Bellini, F; Bellwied, R; Belokurova, S; Belyaev, V; Bencedi, G; Beole, S; Bercuci, A; Berdnikov, Y; Berdnikova, A; Bergmann, L; Besoiu, MG; Betev, L; Bhaduri, PP; Bhasin, A; Bhat, IR; Bhat, MA; Bhattacharjee, B; Bhattacharya, P; Bianchi, L; Bianchi, N
Source
Physical Review D. 106(5)
Subject
Language
Abstract
This article presents the first measurement of the interaction between charm hadrons and nucleons. The two-particle momentum correlations of pD- and p¯D+ pairs are measured by the ALICE Collaboration in high-multiplicity pp collisions at s=13 TeV. The data are compatible with the Coulomb-only interaction hypothesis within (1.1-1.5)σ. The level of agreement slightly improves if an attractive nucleon (N)D¯ strong interaction is considered, in contrast to most model predictions which suggest an overall repulsive interaction. This measurement allows for the first time an estimation of the 68% confidence level interval for the isospin I=0 inverse scattering length of the ND¯ state f0,I=0-1 [-0.4,0.9] fm-1, assuming negligible interaction for the isospin I=1 channel.