Λ_{c}^{+} Production and Baryon-to-Meson Ratios in pp and p-Pb Collisions at sqrt[s_{NN}]=5.02 TeV at the LHC
Articolo
Data di Pubblicazione:
2021
Abstract:
The prompt production of the charm baryon Lambda(c+) and the A(c)(+)/D-0 production ratios were measured at midrapidity with the ALICE detector in pp and (p)-Pb collisions at root S-NN = 5.02 TeV. These new measurements show a clear decrease of the Lambda(+)(c)/D-0 ratio with increasing transverse momentum (p(T)) in both collision systems in the range 2 < P-T < 12 GeV/c, exhibiting similarities with the light-flavor baryon-tomeson ratios p/pi and Lambda/K-S(0). At low p(T), predictions that include additional color-reconnection mechanisms beyond the leading-color approximation, assume the existence of additional higher-mass charm-baryon states, or include hadronization via coalescence can describe the data, while predictions driven by charmquark fragmentation processes measured in e(+) e(-) and e(-) p collisions significantly underestimate the data. The results presented in this Letter provide significant evidence that the established assumption of universality (colliding-system independence) of parton-to-hadron fragmentation is not sufficient to describe charm-baryon production in hadronic collisions at LHC energies.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
Acharya, S; Adamová, D; Adler, A; Adolfsson, J; Aglieri Rinella, G; Agnello, M; Agrawal, N; Ahammed, Z; Ahmad, S; Ahn, S U; Akbar, Z; Akindinov, A; Al-Turany, M; Albuquerque, D S D; Aleksandrov, D; Alessandro, B; Alfanda, H M; Alfaro Molina, R; Ali, B; Ali, Y; Alici, A; Alizadehvandchali, N; Alkin, A; Alme, J; Alt, T; Altenkamper, L; Altsybeev, I; Anaam, M N; Andrei, C; Andreou, D; Andronic, A; Angeletti, M; Anguelov, V; Antičić, T; Antinori, F; Antonioli, P; 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; Bai, X; Bailhache, R; Bala, R; Balbino, A; Baldisseri, A; Ball, M; Banerjee, D; Barbera, R; Barioglio, L; Barlou, M; Barnaföldi, G G; Barnby, L S; Barret, V; Bartels, C; Barth, K; Bartsch, E; Baruffaldi, F; Bastid, N; Basu, S; Batigne, G; Batyunya, B; Bauri, D; Bazo Alba, J L; Bearden, I G; Beattie, C; Belikov, I; Bell Hechavarria, A D C; Bellini, F; Bellwied, R; Belokurova, S; Belyaev, V; Bencedi, G; Beole, S; Bercuci, A; Berdnikov, Y; Berdnikova, A; Berenyi, D; Bergmann, L; Besoiu, M G; Betev, L; Bhaduri, P P; Bhasin, A; Bhat, I R; Bhat, M A; Bhattacharjee, B; Bhattacharya, P; Bianchi, A; Bianchi, L; Bianchi, N; Bielčík, J; Bielčíková, J; Bilandzic, A; Biro, G; Biswas, S; Blair, J T; Blau, D; Blidaru, M B; Blume, C; Boca, G; Bock, F; Bogdanov, A; Boi, S; Bok, J; Boldizsár, L; Bolozdynya, A; Bombara, M; Bonomi, G; Borel, H; Borissov, A; Bossi, H; Botta, E; Bratrud, L; Braun-Munzinger, P; Bregant, M; Broz, M; Bruno, G E; Buckland, M D; Budnikov, D; Buesching, H; Bufalino, S; Bugnon, O; Buhler, P; Buncic, P; Buthelezi, Z; Butt, J B; Bysiak, S A; Caffarri, D; Caliva, A; Calvo Villar, E; Camacho, J M M; Camacho, R S; Camerini, P; Canedo, F D M; Capon, A A; Carnesecchi, F; Caron, R; Castillo Castellanos, J; Casula, E A R; Catalano, F; Ceballos Sanchez, C; Chakraborty, P; Chandra, S; Chang, W; Chapeland, S; Chartier, M; Chattopadhyay, S; Chattopadhyay, S; Chauvin, A; Cheshkov, C; Cheynis, B; Chibante Barroso, V; Chinellato, D D; Cho, S; Chochula, P; Christakoglou, P; Christensen, C H; Christiansen, P; Chujo, T; Cicalo, C; Cifarelli, L; Cindolo, F; Ciupek, M R; Clai, G; Cleymans, J; Colamaria, F; Colburn, J S; Colella, D; Collu, A; Colocci, M; Concas, M; Conesa Balbastre, G; Conesa Del Valle, Z; Contin, G; Contreras, J G; Cormier, T M; Cortese, P; Cosentino, M R; Costa, F; Costanza, S; Crochet, P; Cuautle, E; Cui, P; Cunqueiro, L; Dahms, T; Dainese, A; Damas, F P A; Danisch, M C; Danu, A; Das, D; Das, I; Das, P; Das, P; Das, S; Dash, S; De, S; De Caro, A; de Cataldo, G; De Cilladi, L; de Cuveland, J; De Falco, A; De Gruttola, D; De Marco, N; De Martin, C; De Pasquale, S; Deb, S; Degenhardt, H F; Deja, K R; Delsanto, S; Deng, W; Dhankher, P; Di Bari, D; Di Mauro, A; Diaz, R A; Dietel, T; Dillenseger, P; Ding, Y; Divià, R; Dixit, D U; Djuvsland, Ø; Dmitrieva, U; Do, J; Dobrin, A; Dönigus, B; Dordic, O; Dubey, A K; Dubla, A; Dudi, S; Dukhishyam, M; Dupieux, P; Eder, T M; Ehlers, R J; Eikeland, V N; Elia, D; Erazmus, B; Erhardt, F; Erokhin, A; Ersdal, M R; Espagnon, B; Eulisse, G; Evans, D; Evdokimov, S; Fabbietti, L; Faggin, M; Faivre, J; Fan, F; Fantoni, A; Fasel, M; Fecchio, P; Feliciello, A; Feofilov, G; Fernández Téllez, A; Ferrero, A; Ferretti, A; Festanti, A; Feuillard, V J G; Figiel, J; Filchagin, S; Finogeev, D; Fionda, F M; Fiorenza, G; Flor, F; Flores, A N; Foertsch, S; Foka, P; Fokin, S; Fragiacomo, E; Fuchs, U; Furget, C; Furs, A; Fusco Girard, M; Gaardhøje, J J; Gagliardi, M; Gago, A M; Gal, A; Galvan, C D; Ganoti, P; Garabatos, C; Garcia, J R A; Garcia-Solis, E; Garg, K; Gargiulo, C; Garibli, A; Garner, K; Gasik, P; Gauger, E F; Gay Ducati, M B; Germain, M; Ghosh, J; Ghosh, P; Ghosh, S K; Giacalone, M; Gianotti, P; Giubellino, P; Giubilato, P; Glaenzer, A M C; Glässel, P; Gonzalez, V; González-Trueba, L H; Gorbunov, S; Görlich, L; Gotovac, S; G
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