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The production of strange hadrons (K-S(0), Lambda, Xi(+/-), and Omega(+/-)), baryon-to-meson ratios (Lambda/K-S(0), Xi/K-S(0), and Omega/K-S(0)), and baryon-to-baryon ratios (Xi/Lambda, Omega/Lambda, and Omega/Xi) associated with jets and the underlying event were measured as a function of transverse momentum (pT) in pp collisions at root s = 13TeV and p-Pb collisions at root s(NN) = 5.02TeV with the ALICE detector at the LHC. The inclusive production of the same particle species and the corresponding ratios are also reported. The production of multi-strange hadrons, Xi(+/-) and Omega(+/-), and their associated particle ratios in jets and in the underlying event are measured for the first time. In both pp and p-Pb collisions, the baryon-to-meson and baryon-to-baryon yield ratios measured in jets differ from the inclusive particle production for low and intermediate hadron p(T) (0.6-6 GeV/ c). Ratios measured in the underlying event are in turn similar to those measured for inclusive particle production. In pp collisions, the particle production in jets is compared with Pythia 8 predictions with three colour-reconnection implementation modes. None of them fully reproduces the data in the measured hadron pT region. The maximum deviation is observed for Xi(+/-) and Omega(+/-) which reaches a factor of about six. The event multiplicity dependence is further investigated in p-Pb collisions. In contrast to what is observed in the underlying event, there is no significant event-multiplicity dependence for particle production in jets. The presented measurements provide novel constraints on hadronisation and its Monte Carlo description. In particular, they demonstrate that the fragmentation of jets alone is insufficient to describe the strange and multi-strange particle production in hadronic collisions at LHC energies.
Production of KS0, Λ ((Λ)over-bar), Ξ±, and Ω± in jets and in the underlying event in pp and p-Pb collisions
Acharya, S.;Adamova, D.;Adler, A.;Rinella, G. Aglieri;Agnello, M.;Agrawal, N.;Ahammed, Z.;Ahmad, S.;Ahn, S. U.;Ahuja, I.;Akindinov, A.;Al-Turany, M.;Aleksandrov, D.;Alessandro, B.;Alfanda, H. M.;Alfaro Molina, R.;Ali, B.;Alici, A.;Alizadehvandchali, N.;Alkin, A.;Alme, J.;Alocco, G.;Alt, T.;Altsybeev, I.;Anaam, M. N.;Andrei, C.;Andronic, A.;Anguelov, V.;Antinori, F.;Antonioli, P.;Apadula, N.;Aphecetche, L.;Appelshaeuser, H.;Arata, C.;Arcelli, S.;Aresti, M.;Arnaldi, R.;Arneiro, J. G. M. C. A.;Arsene, I. C.;Arslandok, M.;Augustinus, A.;Averbeck, R.;Azmi, M. D.;Badala, A.;Bae, J.;Baek, Y. W.;Bai, X.;Bailhache, R.;Bailung, Y.;Balbino, A.;Baldisseri, A.;Balis, B.;Banerjee, D.;Banoo, Z.;Barbera, R.;Barile, F.;Barioglio, L.;Barlou, M.;Barnafoldi, G. G.;Barnby, L. S.;Barret, V.;Barreto, L.;Bartels, C.;Barth, K.;Bartsch, E.;Bastid, N.;Basu, S.;Batigne, G.;Battistini, D.;Batyunya, B.;Bauri, D.;Bazo Alba, J. L.;Bearden, I. G.;Beattie, C.;Becht, P.;Behera, D.;Belikov, I.;Hechavarria, A. D. C. Bell;Bellini, F.;Bellwied, R.;Belokurova, S.;Belyaev, V.;Bencedi, G.;Beole, S.;Bercuci, A.;Berdnikov, Y.;Berdnikova, A.;Bergmann, L.;Besoiu, M. G.;Betev, L.;Bhaduri, P. P.;Bhasin, A.;Bhat, M. A.;Bhattacharjee, B.;Bianchi, L.;Bianchi, N.;Bielcik, J.;Bielcikova, J.;Biernat, J.;Bigot, A. P.;Bilandzic, A.;Biro, G.;Biswas, S.;Bize, N.;Blair, J. T.;Blau, D.;Blidaru, M. B.;Bluhme, N.;Blume, C.;Boca, G.;Bock, F.;Bodova, T.;Bogdanov, A.;Boi, S.;Bok, J.;Boldizsar, L.;Bolozdynya, A.;Bombara, M.;Bond, P. M.;Bonomi, G.;Borel, H.;Borissov, A.;Carcamo, A. G. Borquez;Bossi, H.;Botta, E.;Bouziani, Y. E. M.;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.;Buthelezi, Z.;Bysiak, S. A.;Cai, M.;Caines, H.;Caliva, A.;Calvo Villar, E.;Camacho, J. M. M.;Camerini, P.;Canedo, F. D. M.;Carabas, M.;Carballo, A. A.;Carnesecchi, F.;Caron, R.;Carvalho, L. A. D.;Castellanos, J. Castillo;Catalano, F.;Sanchez, C. Ceballos;Chakaberia, I.;Chakraborty, P.;Chandra, S.;Chapeland, S.;Chartier, M.;Chattopadhyay, S.;Chattopadhyay, S.;Chavez, T. G.;Cheng, T.;Cheshkov, C.;Cheynis, B.;Barroso, V. Chibante;Chinellato, D. D.;Chizzali, E. S.;Cho, J.;Cho, S.;Chochula, P.;Christakoglou, P.;Christensen, C. H.;Christiansen, P.;Chujo, T.;Ciacco, M.;Cicalo, C.;Cindolo, F.;Ciupek, M. R.;Clai, G.;Colamaria, F.;Colburn, J. S.;Colella, D.;Colocci, M.;Concas, M.;Balbastre, G. Conesa;del Valle, Z. Conesa;Contin, G.;Contreras, J. G.;Coquet, M. L.;Cormier, T. M.;Cortese, P.;Cosentino, M. R.;Costa, F.;Costanza, S.;Cot, C.;Crkovska, J.;Crochet, P.;Cruz-Torres, R.;Cuautle, E.;Cui, P.;Dainese, A.;Danisch, M. C.;Danu, A.;Das, P.;Das, P.;Das, S.;Dash, A. R.;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, S.;Debski, R. J.;Deja, K. R.;Del Grande, R.;Dello Stritto, L.;Deng, W.;Dhankher, P.;Di Bari, D.;Di Mauro, A.;Diaz, R. A.;Dietel, T.;Ding, Y.;Divia, R.;Dixit, D. U.;Djuvsland, O.;Dmitrieva, U.;Dobrin, A.;Doenigus, B.;Dubinski, J. M.;Dubla, A.;Dudi, S.;Dupieux, P.;Durkac, M.;Dzalaiova, N.;Eder, T. M.;Ehlers, R. J.;Eikeland, V. N.;Eisenhut, F.;Elia, D.;Erazmus, B.;Ercolessi, F.;Erhardt, F.;Ersdal, M. R.;Espagnon, B.;Eulisse, G.;Evans, D.;Evdokimov, S.;Fabbietti, L.;Faggin, M.;Faivre, J.;Fan, F.;Fan, W.;Fantoni, A.;Fasel, M.;Fecchio, P.;Feliciello, A.;Feofilov, G.;Fernandez Tellez, A.;Ferrandi, L.;Ferrer, M. B.;Ferrero, A.;Ferrero, C.;Ferretti, A.;Feuillard, V. J. G.;Filova, V.;Finogeev, D.;Fionda, F. M.;Flor, F.;Flores, A. N.;Foertsch, S.;Fokin, I.;Fokin, S.;Fragiacomo, E.;Frajna, E.;Fuchs, U.;Funicello, N.;Furget, C.;Furs, A.;Fusayasu, T.;Gaardhoje, J. J.;Gagliardi, M.;Gago, A. M.;Galvan, C. D.;Gangadharan, D. R.;Ganoti, P.;Garabatos, C.;Garcia, J. R. A.;Garcia-Solis, E.;Garg, K.;Gargiulo, C.;Garner, K.;Gasik, P.;Gautam, A.;Gay Ducati, M. B.;Germain, M.;Ghosh, C.;Giacalone, M.;Giubellino, P.;Giubilato, P.;Glaenzer, A. M. C.;Glaessel, P.;Glimos, E.;Goh, D. J. Q.;Gonzalez, V.;Gonzalez-Trueba, L. H.;Gorgon, M.;Gotovac, S.;Grabski, V.;Graczykowski, L. K.;Grecka, E.;Grelli, A.;Grigoras, C.;Grigoriev, V.;Grigoryan, S.;Grosa, F.;Grosse-Oetringhaus, J. F.;Grosso, R.;Grund, D.;Guardiano, G. G.;Guernane, R.;Guilbaud, M.;Gulbrandsen, K.;Gundem, T.;Gunji, T.;Guo, W.;Gupta, A.;Gupta, R.;Guzman, S. P.;Gyulai, L.;Habib, M. K.;Hadjidakis, C.;Haider, F. U.;Hamagaki, H.;Hamdi, A.;Hamid, M.;Han, Y.;Hannigan, R.;Haque, M. R.;Harris, J. W.;Harton, A.;Hassan, H.;Hatzifotiadou, D.;Hauer, P.;Havener, L. B.;Heckel, S. T.;Hellbaer, E.;Helstrup, H.;Hemmer, M.;Herman, T.;Herrera Corral, G.;Herrmann, F.;Herrmann, S.;Hetland, K. F.;Heybeck, B.;Hillemanns, H.;Hills, C.;Hippolyte, B.;Hoffmann, F. W.;Hofman, B.;Hohlweger, B.;Hong, G. H.;Horst, M.;Horzyk, A.;Hosokawa, R.;Hou, Y.;Hristov, P.;Hughes, C.;Huhn, P.;Huhta, L. M.;Hulse, C. V.;Humanic, T. J.;Hutson, A.;Hutter, D.;Iddon, J. P.;Ilkaev, R.;Ilyas, H.;Inaba, M.;Innocenti, G. M.;Ippolitov, M.;Isakov, A.;Isidori, T.;Islam, M. S.;Ivanov, M.;Ivanov, M.;Ivanov, V.;Jablonski, M.;Jacak, B.;Jacazio, N.;Jacobs, P. M.;Jadlovska, S.;Jadlovsky, J.;Jaelani, S.;Jaffe, L.;Jahnke, C.;Jakubowska, M. J.;Janik, M. A.;Janson, T.;Jercic, M.;Jia, S.;Jimenez, A. A. P.;Jonas, F.;Jowett, J. M.;Jung, J.;Jung, M.;Junique, A.;Jusko, A.;Kabus, M. J.;Kaewjai, J.;Kalinak, P.;Kalteyer, A. S.;Kalweit, A.;Kaplin, V.;Uysal, A. Karasu;Karatovic, D.;Karavichev, O.;Karavicheva, T.;Karczmarczyk, P.;Karpechev, E.;Kebschull, U.;Keidel, R.;Keijdener, D. L. D.;Keil, M.;Ketzer, B.;Khan, A. M.;Khan, S.;Khanzadeev, A.;Kharlov, Y.;Khatun, A.;Khuntia, A.;Kidson, M. B.;Kileng, B.;Kim, B.;Kim, C.;Kim, D. J.;Kim, E. J.;Kim, J.;Kim, J. S.;Kim, J.;Kim, M.;Kim, S.;Kim, T.;Kimura, K.;Kirsch, S.;Kisel, I.;Kiselev, S.;Kisiel, A.;Kitowski, J. P.;Klay, J. L.;Klein, J.;Klein, S.;Klein-Boesing, C.;Kleiner, M.;Klemenz, T.;Kluge, A.;Knospe, A. G.;Kobdaj, C.;Kollegger, T.;Kondratyev, A.;Kondratyeva, N.;Kondratyuk, E.;Konig, J.;Konigstorfer, S. A.;Konopka, P. J.;Kornakov, G.;Koryciak, S. D.;Kotliarov, A.;Kovalenko, V.;Kowalski, M.;Kozhuharov, V.;Kralik, I.;Kravcakova, A.;Kreis, L.;Krivda, M.;Krizek, F.;Gajdosova, K. Krizkova;Kroesen, M.;Krueger, M.;Krupova, D. M.;Kryshen, E.;Kucera, V.;Kuhn, C.;Kuijer, P. G.;Kumaoka, T.;Kumar, D.;Kumar, L.;Kumar, N.;Kumar, S.;Kundu, S.;Kurashvili, P.;Kurepin, A.;Kurepin, A. B.;Kuryakin, A.;Kushpil, S.;Kvapil, J.;Kweon, M. J.;Kwon, J. Y.;Kwon, Y.;La Pointe, S. L.;La Rocca, P.;Lai, Y. S.;Lakrathok, A.;Lamanna, M.;Langoy, R.;Larionov, P.;Laudi, E.;Lautner, L.;Lavicka, R.;Lazareva, T.;Lea, R.;Lee, H.;Legras, G.;Lehrbach, J.;Lemmon, R. C.;Leon Monzon, I.;Lesch, M. M.;Lesser, E. D.;Lettrich, M.;Levai, P.;Li, X.;Li, X. L.;Lien, J.;Lietava, R.;Likmeta, I.;Lim, B.;Lim, S. H.;Lindenstruth, V.;Lindner, A.;Lippmann, C.;Liu, A.;Liu, D. H.;Liu, J.;Lofnes, I. M.;Loizides, C.;Lokos, S.;Lomker, J.;Loncar, P.;Lopez, J. A.;Lopez, X.;Lopez Torres, E.;Lu, P.;Luhder, J. R.;Lunardon, M.;Luparello, G.;Ma, Y. G.;Maevskaya, A.;Mager, M.;Mahmoud, T.;Maire, A.;Makariev, M. V.;Malaev, M.;Malfattore, G.;Malik, N. M.;Malik, Q. W.;Malik, S. K.;Malinina, L.;Mal'Kevich, D.;Mallick, D.;Mallick, N.;Mandaglio, G.;Manko, V.;Manso, F.;Manzari, V.;Mao, Y.;Margagliotti, G. V.;Margotti, A.;Marin, A.;Markert, C.;Martinengo, P.;Martinez, J. L.;Martinez, M. I.;Garcia, G. Martinez;Masciocchi, S.;Masera, M.;Masoni, A.;Massacrier, L.;Mastroserio, A.;Matonoha, O.;Matuoka, P. F. T.;Matyja, A.;Mayer, C.;Mazuecos, A. L.;Mazzaschi, F.;Mazzilli, M.;Mdhluli, J. E.;Mechler, A. F.;Melikyan, Y.;Menchaca-Rocha, A.;Meninno, E.;Menon, A. S.;Meres, M.;Mhlanga, S.;Miake, Y.;Micheletti, L.;Migliorin, L. C.;Mihaylov, D. L.;Mikhaylov, K.;Mishra, A. N.;Miskowiec, D.;Modak, A.;Mohanty, A. P.;Mohanty, B.;Khan, M. Mohisin;Molander, M. A.;Moravcova, Z.;Mordasini, C.;De Godoy, D. A. Moreira;Morozov, I.;Morsch, A.;Mrnjavac, T.;Muccifora, V.;Muhuri, S.;Mulligan, J. D.;Mulliri, A.;Munhoz, M. G.;Munzer, R. H.;Murakami, H.;Murray, S.;Musa, L.;Musinsky, J.;Myrcha, J. W.;Naik, B.;Nambrath, A. I.;Nandi, B. K.;Nania, R.;Nappi, E.;Nassirpour, A. F.;Nath, A.;Nattrass, C.;Naydenov, M. N.;Neagu, A.;Negru, A.;Nellen, L.;Nesbo, S. V.;Neskovic, G.;Nesterov, D.;Nielsen, B. S.;Nielsen, E. G.;Nikolaev, S.;Nikulin, S.;Nikulin, V.;Noferini, F.;Noh, S.;Nomokonov, P.;Norman, J.;Novitzky, N.;Nowakowski, P.;Nyanin, A.;Nystrand, J.;Ogino, M.;Ohlson, A.;Okorokov, V. A.;Oleniacz, J.;Da Silva, A. C. Oliveira;Oliver, M. H.;Onnerstad, A.;Oppedisano, C.;Ortiz Velasquez, A.;Otwinowski, J.;Oya, M.;Oyama, K.;Pachmayer, Y.;Padhan, S.;Pagano, D.;Paic, G.;Palasciano, A.;Panebianco, S.;Park, H.;Park, H.;Park, J.;Parkkila, J. E.;Patra, R. N.;Paul, B.;Pei, H.;Peitzmann, T.;Peng, X.;Pennisi, M.;Pereira, L. G.;Peresunko, D.;Perez, G. M.;Perrin, S.;Pestov, Y.;Petracek, V.;Petrov, V.;Petrovici, M.;Pezzi, R. P.;Piano, S.;Pikna, M.;Pillot, P.;Pinazza, O.;Pinsky, L.;Pinto, C.;Pisano, S.;Ploskon, M.;Planinic, M.;Pliquett, F.;Poghosyan, M. G.;Polichtchouk, B.;Politano, S.;Poljak, N.;Pop, A.;Porteboeuf-Houssais, S.;Pozdniakov, V.;Pradhan, K. K.;Prasad, S. K.;Prasad, S.;Preghenella, R.;Prino, F.;Pruneau, C. A.;Pshenichnov, I.;Puccio, M.;Pucillo, S.;Pugelova, Z.;Qiu, S.;Quaglia, L.;Quishpe, R. E.;Ragoni, S.;Rakotozafindrabe, A.;Ramello, L.;Rami, F.;Ramirez, S. A. R.;Rancien, T. A.;Rasa, M.;Rasanen, S. S.;Rath, R.;Rauch, M. P.;Ravasenga, I.;Read, K. F.;Reckziegel, C.;Redelbach, A. R.;Redlich, K.;Reetz, C. A.;Rehman, A.;Reidt, F.;Reme-Ness, H. A.;Rescakova, Z.;Reygers, K.;Riabov, A.;Riabov, V.;Ricci, R.;Richter, M.;Riedel, A. A.;Riegler, W.;Ristea, C.;Rodriguez Cahuantzi, M.;Roed, K.;Rogalev, R.;Rogochaya, E.;Rogoschinski, T. S.;Rohr, D.;Rohrich, D.;Rojas, P. F.;Torres, S. Rojas;Rokita, P. S.;Romanenko, G.;Ronchetti, F.;Rosano, A.;Rosas, E. D.;Roslon, K.;Rossi, A.;Roy, A.;Roy, S.;Rubini, N.;Rueda, O. V.;Ruggiano, D.;Rui, R.;Rumyantsev, B.;Russek, P. G.;Russo, R.;Rustamov, A.;Ryabinkin, E.;Ryabov, Y.;Rybicki, A.;Rytkonen, H.;Rzesa, W.;Saarimaki, O. A. M.;Sadek, R.;Sadhu, S.;Sadovsky, S.;Saetre, J.;Safarik, K.;Saha, S. K.;Saha, S.;Sahoo, B.;Sahoo, R.;Sahoo, S.;Sahu, D.;Sahu, P. K.;Saini, J.;Sajdakova, K.;Sakai, S.;Salvan, M. P.;Sambyal, S.;Sanna, I.;Saramela, T. B.;Sarkar, D.;Sarkar, N.;Sarma, P.;Sarritzu, V.;Sarti, V. M.;Sas, M. H. P.;Schambach, J.;Scheid, H. S.;Schiaua, C.;Schicker, R.;Schmah, A.;Schmidt, C.;Schmidt, H. R.;Schmidt, M. O.;Schmidt, M.;Schmidt, N. V.;Schmier, A. R.;Schotter, R.;Schroeter, A.;Schukraft, J.;Schwarz, K.;Schweda, K.;Scioli, G.;Scomparin, E.;Seger, J. E.;Sekiguchi, Y.;Sekihata, D.;Selyuzhenkov, I.;Senyukov, S.;Seo, J. J.;Serebryakov, D.;Serksnyte, L.;Sevcenco, A.;Shaba, T. J.;Shabetai, A.;Shahoyan, R.;Shangaraev, A.;Sharma, A.;Sharma, B.;Sharma, D.;Sharma, H.;Sharma, M.;Sharma, S.;Sharma, S.;Sharma, U.;Shatat, A.;Sheibani, O.;Shigaki, K.;Shimomura, M.;Shin, J.;Shirinkin, S.;Shou, Q.;Sibiriak, Y.;Siddhanta, S.;Siemiarczuk, T.;Silva, T. F.;Silvermyr, D.;Simantathammakul, T.;Simeonov, R.;Singh, B.;Singh, B.;Singh, R.;Singh, R.;Singh, R.;Singh, S.;Singh, V. K.;Singhal, V.;Sinha, T.;Sitar, B.;Sitta, M.;Skaali, T. B.;Skorodumovs, G.;Slupecki, M.;Smirnov, N.;Snellings, R. J. M.;Solheim, E. H.;Song, J.;Songmoolnak, A.;Soramel, F.;Spijkers, R.;Sputowska, I.;Staa, J.;Stachel, J.;Stan, I.;Steffanic, P. J.;Stiefelmaier, S. F.;Stocco, D.;Storehaug, I.;Stratmann, P.;Strazzi, S.;Stylianidis, C. P.;Suaide, A. A. P.;Suire, C.;Sukhanov, M.;Suljic, M.;Sultanov, R.;Sumberia, V.;Sumowidagdo, S.;Swain, S.;Szarka, I.;Szymkowski, M.;Taghavi, S. F.;Taillepied, G.;Takahashi, J.;Tambave, G. J.;Tang, S.;Tang, Z.;Takaki, J. D. Tapia;Tapus, N.;Tarasovicova, L. A.;Tarzila, M. G.;Tassielli, G. F.;Tauro, A.;Tejeda Munoz, G.;Telesca, A.;Terlizzi, L.;Terrevoli, C.;Tersimonov, G.;Thakur, S.;Thomas, D.;Tikhonov, A.;Timmins, A. R.;Tkacik, M.;Tkacik, T.;Toia, A.;Tokumoto, R.;Topilskaya, N.;Toppi, M.;Torales-Acosta, F.;Tork, T.;Ramos, A. G. Torres;Trifiro, A.;Triolo, A. S.;Tripathy, S.;Tripathy, T.;Trogolo, S.;Trubnikov, V.;Trzaska, W. H.;Trzcinski, T. P.;Tumkin, A.;Turrisi, R.;Tveter, T. S.;Ullaland, K.;Ulukutlu, B.;Uras, A.;Urioni, M.;Usai, G. L.;Vala, M.;Valle, N.;van Doremalen, L. V. R.;van Leeuwen, M.;van Veen, C. A.;van Weelden, R. J. G.;Vande Vyvre, P.;Varga, D.;Varga, Z.;Vasileiou, M.;Vasiliev, A.;Doce, O. Vazquez;Vechernin, V.;Vercellin, E.;Vergara Limon, S.;Vermunt, L.;Vertesi, R.;Verweij, M.;Vickovic, L.;Vilakazi, Z.;Baillie, O. Villalobos;Villani, A.;Vino, G.;Vinogradov, A.;Virgili, T.;Vislavicius, V.;Vodopyanov, A.;Volkel, B.;Voelkl, M. A.;Voloshin, K.;Voloshin, S. A.;Volpe, G.;von Haller, B.;Vorobyev, I.;Vozniuk, N.;Vrlakova, J.;Wang, C.;Wang, D.;Wang, Y.;Wegrzynek, A.;Weiglhofer, F. T.;Wenzel, S. C.;Wessels, J. P.;Weyhmiller, S. L.;Wiechula, J.;Wikne, J.;Wilk, G.;Wilkinson, J.;Willems, G. A.;Windelband, B.;Winn, M.;Wright, J. R.;Wu, W.;Wu, Y.;Xu, R.;Yadav, A.;Yadav, A. K.;Yalcin, S.;Yamaguchi, Y.;Yang, S.;Yano, S.;Yin, Z.;Yoo, I. -K.;Yoon, J. H.;Yuan, S.;Yuncu, A.;Zaccolo, V.;Zampolli, C.;Zanone, F.;Zardoshti, N.;Zarochentsev, A.;Zavada, P.;Zaviyalov, N.;Zhalov, M.;Zhang, B.;Zhang, L.;Zhang, S.;Zhang, X.;Zhang, Y.;Zhang, Z.;Zhao, M.;Zherebchevskii, V.;Zhi, Y.;Zhou, D.;Zhou, Y.;Zhu, J.;Zhu, Y.;Zugravel, S. C.;Zurlo, N.
2023-01-01
Abstract
The production of strange hadrons (K-S(0), Lambda, Xi(+/-), and Omega(+/-)), baryon-to-meson ratios (Lambda/K-S(0), Xi/K-S(0), and Omega/K-S(0)), and baryon-to-baryon ratios (Xi/Lambda, Omega/Lambda, and Omega/Xi) associated with jets and the underlying event were measured as a function of transverse momentum (pT) in pp collisions at root s = 13TeV and p-Pb collisions at root s(NN) = 5.02TeV with the ALICE detector at the LHC. The inclusive production of the same particle species and the corresponding ratios are also reported. The production of multi-strange hadrons, Xi(+/-) and Omega(+/-), and their associated particle ratios in jets and in the underlying event are measured for the first time. In both pp and p-Pb collisions, the baryon-to-meson and baryon-to-baryon yield ratios measured in jets differ from the inclusive particle production for low and intermediate hadron p(T) (0.6-6 GeV/ c). Ratios measured in the underlying event are in turn similar to those measured for inclusive particle production. In pp collisions, the particle production in jets is compared with Pythia 8 predictions with three colour-reconnection implementation modes. None of them fully reproduces the data in the measured hadron pT region. The maximum deviation is observed for Xi(+/-) and Omega(+/-) which reaches a factor of about six. The event multiplicity dependence is further investigated in p-Pb collisions. In contrast to what is observed in the underlying event, there is no significant event-multiplicity dependence for particle production in jets. The presented measurements provide novel constraints on hadronisation and its Monte Carlo description. In particular, they demonstrate that the fragmentation of jets alone is insufficient to describe the strange and multi-strange particle production in hadronic collisions at LHC energies.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/383946
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simulazione ASN
Il report seguente simula gli indicatori relativi alla propria produzione scientifica in relazione alle soglie ASN 2023-2025 del proprio SC/SSD. Si ricorda che il superamento dei valori soglia (almeno 2 su 3) è requisito necessario ma non sufficiente al conseguimento dell'abilitazione. La simulazione si basa sui dati IRIS e sugli indicatori bibliometrici alla data indicata e non tiene conto di eventuali periodi di congedo obbligatorio, che in sede di domanda ASN danno diritto a incrementi percentuali dei valori. La simulazione può differire dall'esito di un’eventuale domanda ASN sia per errori di catalogazione e/o dati mancanti in IRIS, sia per la variabilità dei dati bibliometrici nel tempo. Si consideri che Anvur calcola i valori degli indicatori all'ultima data utile per la presentazione delle domande.
La presente simulazione è stata realizzata sulla base delle specifiche raccolte sul tavolo ER del Focus Group IRIS coordinato dall’Università di Modena e Reggio Emilia e delle regole riportate nel DM 589/2018 e allegata Tabella A. Cineca, l’Università di Modena e Reggio Emilia e il Focus Group IRIS non si assumono alcuna responsabilità in merito all’uso che il diretto interessato o terzi faranno della simulazione. Si specifica inoltre che la simulazione contiene calcoli effettuati con dati e algoritmi di pubblico dominio e deve quindi essere considerata come un mero ausilio al calcolo svolgibile manualmente o con strumenti equivalenti.