Charged-particle production as a function of the relative transverse activity classifier in pp, p-Pb, and Pb-Pb collisions at the LHC
Articolo
Data di Pubblicazione:
2024
Abstract:
Measurements of charged-particle production in pp, p-Pb, and Pb-Pb collisions in the toward, away, and transverse regions with the ALICE detector are discussed. These regions are defined event-by-event relative to the azimuthal direction of the charged trigger particle, which is the reconstructed particle with the largest transverse momentum ( p(trig) (T)) in the range 8 < p(trig) (T) < 15 GeV/c. The toward and away regions contain the primary and recoil jets, respectively; both regions are accompanied by the underlying event (UE). In contrast, the transverse region perpendicular to the direction of the trigger particle is dominated by the so-called UE dynamics, and includes also contributions from initial- and final-state radiation. The relative transverse activity classifier, R-T = N-ch(T)/< N-ch(T)>, is used to group events according to their UE activity, where < N-ch(T)> is the charged-particle multiplicity per event in the transverse region and.< N-ch(T)>. is the mean value over the whole analysed sample. The energy dependence of the R-T distributions in pp collisions at root s = 2.76, 5.02, 7, and 13TeV is reported, exploring the Koba-Nielsen-Olesen (KNO) scaling properties of the multiplicity distributions. The first measurements of charged-particle pT spectra as a function of RT in the three azimuthal regions in pp, p-Pb, and Pb-Pb collisions at root sNN = 5.02TeV are also reported. Data are compared with predictions obtained from the event generators PYTHIA 8 and EPOS LHC. This set of measurements is expected to contribute to the understanding of the origin of collective-like effects in small collision systems (pp and p-Pb).
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
Hadron-Hadron Scattering; Hard Scattering; Multi-Parton Interactions
Elenco autori:
Alocco, G; Beole, S; Bianchi, Livio; Botta, Elena; Ferretti, Alessandro;Gagliardi, Martino;Masera, Massimo;Mazzaschi, F;Pennisi, Michele; Perciballi, Stefania; Pucillo, Sara; Quaglia, Luca; Riffero, A. G.;Terlizzi, Livia; Trogolo, S; Vercellin, E; Acharya, S; Adamová, D; Rinella, GA; Agnello, M; Agrawal, N; Ahammed, Z; Ahmad, S; Ahn, SU; Ahuja,; Akindinov, A; Al-Turany, M; Aleksandrov, D; Alessandro, B; Alfanda, HM; Molina, RA; Ali, B; Alici, A; Alizadehvandchali, N; Alkin, A; Alme, J; Alocco, G; Alt, T; Altamura, AR; Altsybeev,; Alvarado, JR; Anaam, MN; Andrei, C; Andreou, N; Andronic, A; Anguelov,; Antinori, F; Antonioli, P; Apadula, N; Aphecetche, L; Appelshäuser, H; Arata, C; Arcelli, S; Aresti, M; Arnaldi, R; Arneiro, JGMCA; Arsene, IC; Arslandok, M; Augustinus, A; Averbeck, R; Azmi, MD; Baba, H; Badalà, A; Bae, J; Baek, YW; Bai, X; Bailhache, R; Bailung, Y; Balbino, A; Baldisseri, A; Balis, B; Banerjee, D; Banoo, Z; Barbera, R; Barile, F; Barioglio, L; Barlou, M; Barman, B; Barnaföldi, GG; Barnby, LS; Barret,; Barreto, L; Bartels, C; Barth, K; Bartsch, E; Bastid, N; Basu, S; Batigne, G; Battistini, D; Batyunya, B; Bauri, D; Alba, JLB; Bearden, IG; Beattie, C; Becht, P; Behera, D; Belikov,; Hechavarria, ADCB; Bellini, F; Bellwied, R; Belokurova, S; Beltran, YA; Bencedi, G; Beole, S; Berdnikov, Y; Berdnikova, A; Bergmann, L; Besoiu, MG; Betev, L; Bhaduri, PP; Bhasin, A; Bhat, MA; Bhattacharjee, B; Bianchi, L; Bianchi, N; Bielcík, J; Bielcíková, J; Biernat, J; Bigot, AP; Bilandzic, A; Biro, G; Biswas, S; Bize, N; Blair, JT; Blau, D; Blidaru, MB; Bluhme, N; Blume, C; Boca, G; Bock, F; Bodova, T; Bogdanov, A; Boi, S; Bok, J; Boldizsár, L; Bombara, M; Bond, PM; Bonomi, G; Borel, H; Borissov, A; Carcamo, AGB; Bossi, H; Botta, E; Bouziani, YEM; Bratrud, L; Braun-Munzinger, P; Bregant, M; Broz, M; Bruno, GE; Buckland, MD; Budnikov, D; Buesching, H; Bufalino, S; Buhler, P; Burmasov, N; Buthelezi, Z; Bylinkin, A; Bysiak, SA; Cai, M; Caines, H; Caliva, A; Villar, EC; Camacho, JMM; Camerini, P; Canedo, FDM; Cantway, SL; Carabas, M; Carballo, AA; Carnesecchi, F; Caron, R; Carvalho, LAD; Castellanos, JC; Catalano, F; Sanchez, CC; Chakaberia,; Chakraborty, P; Chandra, S; Chapeland, S; Chartier, M; Chattopadhyay, S; Chattopadhyay, S; Cheng, T; Cheshkov, C; Cheynis, B; Barroso, VC; Chinellato, DD; Chizzali, ES; Cho, J; Cho, S; Chochula, P; Choudhury, D; Christakoglou, P; Christensen, CH; Christiansen, P; Chujo, T; Ciacco, M; Cicalo, C; Cindolo, F; Ciupek, MR; Clai, G; Colamaria, F; Colburn, JS; Colella, D; Colocci, M; Concas, M; Balbastre, GC; del Valle, ZC; Contin, G; Contreras, JG; Coquet, ML; Cortese, P; Cosentino, MR; Costa, F; Costanza, S; Cot, C; Crkovská, J; Crochet, P; Cruz-Torres, R; Cui, P; Dainese, A; Danisch, MC; Danu, A; Das, P; Das, P; Das, S; Dash, AR; Dash, S; De Caro, A; de Cataldo, G; de Cuveland, J; De Falco, A; De Gruttola, D; De Marco, N; De Martin, C; De Pasquale, S; Deb, R; Del Grande, R; Dello Stritto, L; Deng, W; Dhankher, P; Di Bari, D; Di Mauro, A; Diab, B; Diaz, RA; Dietel, T; Ding, Y; Ditzel, J; Divià, R; Dixit, DU; Djuvsland, O; Dmitrieva, U; Dobrin, A; Dönigus, B; Dubinski, JM; Dubla, A; Dudi, S; Dupieux, P; Durkac, M; Dzalaiova, N; Eder, TM; Ehlers, RJ; Eisenhut, F; Ejima, R; Elia, D; Erazmus, B; Ercolessi, F; Espagnon, B; Eulisse, G; Evans, D; Evdokimov, S; Fabbietti, L; Faggin, M; Faivre, J; Fan, F; Fan, W; Fantoni, A; Fasel, M; Feliciello, A; Feoflov, G; Téllez, AF; Ferrandi, L; Ferrer, MB; Ferrero, A; Ferrero, C; Ferretti, A; Feuillard, VJG; Filova,; Finogeev, D; Fionda, FM; Flatland, E; Flor, F; Flores, AN; Foertsch, S; Fokin,; Fokin, S; Fragiacomo, E; Frajna, E; Fuchs, U; Funicello, N; Furget, C; Furs, A; Fusayasu, T; Gaardhoje, JJ; Gagliardi, M; Gago, AM; Gahlaut, T; Galvan, CD; Gangadharan, DR; Ganoti, P; Garabatos, C; Chávez, TG; Garcia-Solis, E; Gargiulo, C; Gasik, P; Gautam, A; Ducati, MBG; Germain, M; Ghimouz, A; Ghosh, C; Giacalone, M; Gioachin,
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