Measurement of ϒ(1S) Elliptic Flow at Forward Rapidity in Pb-Pb Collisions at sqrt[s_{NN}]=5.02 TeV.
S Acharya,D Adamová, S P Adhya, A Adler,J Adolfsson, M M Aggarwal, G Aglieri Rinella,M Agnello,N Agrawal, Z Ahammed,S Ahmad,S U Ahn,A Akindinov, M Al-Turany,S N Alam, D S D Albuquerque,D Aleksandrov, B Alessandro, H M Alfanda,R Alfaro Molina,B Ali,Y Ali, A Alici, A Alkin, J Alme, T Alt,L Altenkamper, I Altsybeev, M N Anaam, C Andrei,D Andreou,H A Andrews, A Andronic, M Angeletti, V Anguelov, C Anson, T Antičić, F Antinori, P Antonioli, R Anwar,N Apadula, L Aphecetche, H Appelshäuser, S Arcelli,R Arnaldi,M Arratia, I C Arsene, M Arslandok, A Augustinus, R Averbeck,S Aziz, M D Azmi, A Badalà,Y W Baek, S Bagnasco, X Bai, R Bailhache,R Bala, A Baldisseri,M Ball, S Balouza,R C Baral,R Barbera,L Barioglio,G G Barnaföldi, L S Barnby, V Barret,P Bartalini, K Barth,E Bartsch,F Baruffaldi, N Bastid,S Basu,G Batigne, B Batyunya, P C Batzing, D Bauri, J L Bazo Alba, I G Bearden,C Bedda, N K Behera, I Belikov, F Bellini, R Bellwied,V Belyaev,G Bencedi, S Beole, A Bercuci,Y Berdnikov,D Berenyi, R A Bertens, D Berzano, M G Besoiu, L Betev, A Bhasin,I R Bhat,M A Bhat,H Bhatt,B Bhattacharjee,A Bianchi, L Bianchi, N Bianchi, J Bielčík, J Bielčíková, A Bilandzic,G Biro,R Biswas,S Biswas,J T Blair, D Blau, C Blume,G Boca, F Bock, A Bogdanov, L Boldizsár,A Bolozdynya, M Bombara,G Bonomi, H Borel, A Borissov, M Borri, H Bossi,E Botta, L Bratrud, P Braun-Munzinger, M Bregant,T A Broker, M Broz, E J Brucken, E Bruna, G E Bruno, M D Buckland, D Budnikov, H Buesching, S Bufalino, O Bugnon,P Buhler, P Buncic,Z Buthelezi, J B Butt,J T Buxton,S A Bysiak, D Caffarri, A Caliva, E Calvo Villar, R S Camacho, P Camerini,A A Capon,F Carnesecchi,R Caron, J Castillo Castellanos,A J Castro,E A R Casula, F Catalano, C Ceballos Sanchez,P Chakraborty,S Chandra, B Chang,W Chang, S Chapeland,M Chartier,S Chattopadhyay,A Chauvin, C Cheshkov, B Cheynis,V Chibante Barroso, D D Chinellato,S Cho, P Chochula,T Chowdhury, P Christakoglou, C H Christensen, P Christiansen, T Chujo, C Cicalo, L Cifarelli, F Cindolo, J Cleymans, F Colamaria,D Colella, A Collu,M Colocci,M Concas,G Conesa Balbastre,Z Conesa Del Valle, G Contin, J G Contreras, T M Cormier,Y Corrales Morales, P Cortese,M R Cosentino,F Costa, S Costanza,J Crkovská, P Crochet, E Cuautle,L Cunqueiro, D Dabrowski,T Dahms, A Dainese, F P A Damas,S Dani, M C Danisch, A Danu, D Das, I Das,P Das,S Das,A Dash, S Dash, A Dashi,S De, A De Caro, G de Cataldo, C de Conti, J de Cuveland, A De Falco, D De Gruttola, N De Marco,S De Pasquale, R D De Souza,S Deb,H F Degenhardt, K R Deja, A Deloff,S Delsanto,D Devetak, P Dhankher, D Di Bari, A Di Mauro, R A Diaz, T Dietel,P Dillenseger,Y Ding, R Divià, Ø Djuvsland, U Dmitrieva, A Dobrin, B Dönigus, O Dordic,A K Dubey, A Dubla,S Dudi, M Dukhishyam, P Dupieux, R J Ehlers, D Elia, H Engel, E Epple,B Erazmus, F Erhardt, A Erokhin,M R Ersdal, B Espagnon,G Eulisse, J Eum,D Evans,S Evdokimov, L Fabbietti, M Faggin, J Faivre, A Fantoni, M Fasel,P Fecchio, A Feliciello, G Feofilov, A Fernández Téllez, A Ferrero,A Ferretti,A Festanti,V J G Feuillard, J Figiel, S Filchagin, D Finogeev, F M Fionda, G Fiorenza,F Flor, S Foertsch, P Foka,S Fokin, E Fragiacomo, U Frankenfeld, G G Fronze, U Fuchs, C Furget,A Furs, M Fusco Girard, J J Gaardhøje,M Gagliardi, A M Gago,A Gal, C D Galvan, P Ganoti, C Garabatos,E Garcia-Solis,K Garg,C Gargiulo, A Garibli, K Garner,P Gasik,E F Gauger, M B Gay Ducati, M Germain,J Ghosh,P Ghosh,S K Ghosh, P Gianotti, P Giubellino, P Giubilato, P Glässel,D M Goméz Coral,A Gomez Ramirez,V Gonzalez, P González-Zamora,S Gorbunov, L Görlich, S Gotovac, V Grabski, L K Graczykowski,K L Graham,L Greiner, A Grelli, C Grigoras, V Grigoriev, A Grigoryan,S Grigoryan, O S Groettvik, J M Gronefeld,F Grosa,J F Grosse-Oetringhaus, R Grosso, R Guernane, B Guerzoni, M Guittiere, K Gulbrandsen,T Gunji,A Gupta, R Gupta,I B Guzman, R Haake, M K Habib, C Hadjidakis,H Hamagaki, G Hamar,M Hamid, R Hannigan, M R Haque, A Harlenderova, J W Harris,A Harton, J A Hasenbichler,H Hassan, D Hatzifotiadou, P Hauer,S Hayashi, A D L B Hechavarria,S T Heckel, E Hellbär, H Helstrup, A Herghelegiu,E G Hernandez, G Herrera Corral, F Herrmann, K F Hetland, T E Hilden,H Hillemanns,C Hills, B Hippolyte, B Hohlweger,D Horak,S Hornung,R Hosokawa, P Hristov,C Huang,C Hughes,P Huhn, T J Humanic, H Hushnud, L A Husova,N Hussain, S A Hussain,T Hussain,D Hutter, D S Hwang, J P Iddon, R Ilkaev, M Inaba, M Ippolitov,M S Islam,M Ivanov,V Ivanov,V Izucheev,B Jacak, N Jacazio, P M Jacobs, M B Jadhav,S Jadlovska,J Jadlovsky, S Jaelani, C Jahnke,M J Jakubowska,M A Janik, M Jercic, O Jevons, R T Jimenez Bustamante,M Jin,F Jonas, P G Jones, A Jusko, P Kalinak, A Kalweit,J H Kang, V Kaplin,S Kar, A Karasu Uysal, O Karavichev, T Karavicheva, P Karczmarczyk, E Karpechev, U Kebschull, R Keidel, M Keil,B Ketzer, Z Khabanova,A M Khan, S Khan, S A Khan, A Khanzadeev,Y Kharlov,A Khatun,A Khuntia, B Kileng,B Kim,D Kim,D J Kim, E J Kim, H Kim, J Kim,J S Kim, J Kim,M Kim, S Kim,T Kim,S Kirsch, I Kisel, S Kiselev,A Kisiel, J L Klay, C Klein, J Klein,S Klein, C Klein-Bösing, S Klewin, A Kluge, M L Knichel, A G Knospe,C Kobdaj, M K Köhler, T Kollegger,A Kondratyev, N Kondratyeva,E Kondratyuk,P J Konopka, L Koska,O Kovalenko,V Kovalenko,M Kowalski, I Králik,A Kravčáková,L Kreis, M Krivda, F Krizek, K Krizkova Gajdosova,M Krüger,E Kryshen, M Krzewicki,A M Kubera,V Kučera,C Kuhn, P G Kuijer,L Kumar,S Kumar,S Kundu, P Kurashvili, A Kurepin, A B Kurepin, A Kuryakin, S Kushpil, J Kvapil, M J Kweon, J Y Kwon, Y Kwon,S L La Pointe, P La Rocca, Y S Lai, R Langoy,K Lapidus,A Lardeux, P Larionov, E Laudi,R Lavicka, T Lazareva,R Lea, L Leardini,S Lee, F Lehas, S Lehner, J Lehrbach, R C Lemmon, I León Monzón, E D Lesser, M Lettrich,P Lévai,X Li, X L Li,J Lien, R Lietava,B Lim,S Lindal, V Lindenstruth, S W Lindsay,C Lippmann, M A Lisa,V Litichevskyi, A Liu,S Liu, W J Llope, I M Lofnes,V Loginov, C Loizides,P Loncar,X Lopez,E López Torres, P Luettig, J R Luhder, M Lunardon, G Luparello, M Lupi, A Maevskaya,M Mager,S M Mahmood,T Mahmoud,A Maire,R D Majka,M Malaev, Q W Malik, L Malinina, D Mal'Kevich, P Malzacher, A Mamonov, G Mandaglio,V Manko, F Manso, V Manzari,Y Mao,M Marchisone, J Mareš, G V Margagliotti, A Margotti,J Margutti, A Marín,C Markert, M Marquard, N A Martin, P Martinengo,J L Martinez,M I Martínez, G Martínez García, M Martinez Pedreira, S Masciocchi, M Masera, A Masoni, L Massacrier, E Masson, A Mastroserio,A M Mathis,O Matonoha, P F T Matuoka, A Matyja,C Mayer,M Mazzilli, M A Mazzoni, A F Mechler, F Meddi,Y Melikyan, A Menchaca-Rocha, E Meninno, M Meres,S Mhlanga,Y Miake, L Micheletti,M M Mieskolainen, D L Mihaylov,K Mikhaylov, A Mischke, A N Mishra, D Miśkowiec, C M Mitu, A Modak,N Mohammadi, A P Mohanty, B Mohanty, M Mohisin Khan,M Mondal, M M Mondal, C Mordasini, D A Moreira De Godoy, L A P Moreno,S Moretto, A Morreale,A Morsch, T Mrnjavac, V Muccifora,E Mudnic,D Mühlheim,S Muhuri,J D Mulligan, M G Munhoz, K Münning, R H Munzer,H Murakami, S Murray, L Musa, J Musinsky,C J Myers, J W Myrcha,B Naik,R Nair, B K Nandi, R Nania, E Nappi,M U Naru, A F Nassirpour, H Natal da Luz,C Nattrass,R Nayak, T K Nayak, S Nazarenko,R A Negrao De Oliveira,L Nellen,S V Nesbo, G Neskovic, D Nesterov,B S Nielsen, S Nikolaev,S Nikulin,V Nikulin, F Noferini, P Nomokonov, G Nooren,J Norman,N Novitzky,P Nowakowski, A Nyanin, J Nystrand,M Ogino, A Ohlson, J Oleniacz,A C Oliveira Da Silva,M H Oliver, C Oppedisano,R Orava, A Ortiz Velasquez,A Oskarsson, J Otwinowski,K Oyama,Y Pachmayer,V Pacik, D Pagano, G Paić, P Palni,J Pan,A K Pandey,S Panebianco, V Papikyan,P Pareek,J Park, J E Parkkila,S Parmar, A Passfeld, S P Pathak,R N Patra,B Paul,H Pei, T Peitzmann,X Peng,L G Pereira, H Pereira Da Costa, D Peresunko, G M Perez, E Perez Lezama, V Peskov,Y Pestov, V Petráček, M Petrovici, R P Pezzi, S Piano, M Pikna, P Pillot,L O D L Pimentel, O Pinazza, L Pinsky,C Pinto, S Pisano,D Pistone, D B Piyarathna, M Płoskoń, M Planinic,F Pliquett, J Pluta,S Pochybova, M G Poghosyan, B Polichtchouk,N Poljak, W Poonsawat, A Pop,H Poppenborg, S Porteboeuf-Houssais,V Pozdniakov,S K Prasad,R Preghenella, F Prino, C A Pruneau,I Pshenichnov,M Puccio,V Punin, K Puranapanda, J Putschke, R E Quishpe, S Ragoni,S Raha, S Rajput, J Rak, A Rakotozafindrabe, L Ramello, F Rami, R Raniwala, S Raniwala,S S Räsänen, B T Rascanu,R Rath,V Ratza,I Ravasenga, K F Read,K Redlich,A Rehman, P Reichelt,F Reidt,X Ren, R Renfordt, A Reshetin, J-P Revol, K Reygers,V Riabov, T Richert, M Richter, P Riedler,W Riegler, F Riggi,C Ristea, S P Rode, M Rodríguez Cahuantzi, K Røed, R Rogalev,E Rogochaya,D Rohr, D Röhrich, P S Rokita, F Ronchetti, E D Rosas, K Roslon, P Rosnet,A Rossi, A Rotondi, F Roukoutakis, A Roy, P Roy, O V Rueda,R Rui, B Rumyantsev, A Rustamov,E Ryabinkin,Y Ryabov, A Rybicki, H Rytkonen,S Sadhu,S Sadovsky,K Šafařík,S K Saha,B Sahoo, P Sahoo, R Sahoo,S Sahoo,P K Sahu,J Saini,S Sakai,S Sambyal,V Samsonov, F R Sanchez,A Sandoval, A Sarkar,D Sarkar,N Sarkar,P Sarma, V M Sarti,M H P Sas, E Scapparone,B Schaefer, J Schambach, H S Scheid, C Schiaua, R Schicker,A Schmah, C Schmidt, H R Schmidt,M O Schmidt, M Schmidt, N V Schmidt, A R Schmier, J Schukraft,Y Schutz,K Schwarz, K Schweda, G Scioli, E Scomparin,M Šefčík, J E Seger,Y Sekiguchi,D Sekihata,I Selyuzhenkov,S Senyukov,D Serebryakov, E Serradilla, P Sett, A Sevcenco, A Shabanov, A Shabetai, R Shahoyan, W Shaikh, A Shangaraev,A Sharma,H Sharma,M Sharma, N Sharma,A I Sheikh, K Shigaki, M Shimomura,S Shirinkin,Q Shou,Y Sibiriak,S Siddhanta,T Siemiarczuk,D Silvermyr,C Silvestre,G Simatovic, G Simonetti,R Singh, V K Singh,V Singhal,T Sinha, B Sitar, M Sitta, T B Skaali, M Slupecki, N Smirnov,R J M Snellings,T W Snellman, J Sochan, C Soncco,J Song, A Songmoolnak, F Soramel,S Sorensen, I Sputowska,J Stachel,I Stan,P Stankus, P J Steffanic, E Stenlund, D Stocco, M M Storetvedt, P Strmen,A A P Suaide, T Sugitate, C Suire,M Suleymanov, M Suljic,R Sultanov, M Šumbera,S Sumowidagdo, K Suzuki,S Swain,A Szabo, I Szarka,U Tabassam, G Taillepied, J Takahashi, G J Tambave,S Tang,M Tarhini, M G Tarzila, A Tauro, G Tejeda Muñoz,A Telesca, C Terrevoli,D Thakur, S Thakur,D Thomas, F Thoresen, R Tieulent,A Tikhonov, A R Timmins, A Toia, N Topilskaya,M Toppi, F Torales-Acosta, S R Torres, A Trifiro, S Tripathy, T Tripathy,S Trogolo, G Trombetta, L Tropp,V Trubnikov, W H Trzaska,T P Trzcinski,B A Trzeciak,T Tsuji, A Tumkin,R Turrisi, T S Tveter, K Ullaland, E N Umaka, A Uras,G L Usai,A Utrobicic,M Vala,N Valle,S Vallero,N van der Kolk, L V R van Doremalen, M van Leeuwen, P Vande Vyvre,D Varga, Z Varga, M Varga-Kofarago,A Vargas,M Vargyas, R Varma, M Vasileiou,A Vasiliev,O Vázquez Doce, V Vechernin,A M Veen, E Vercellin, S Vergara Limón, L Vermunt, R Vernet, R Vértesi, M G D L C Vicencio, L Vickovic, J Viinikainen,Z Vilakazi, O Villalobos Baillie, A Villatoro Tello, G Vino, A Vinogradov,T Virgili,V Vislavicius, A Vodopyanov,B Volkel, M A Völkl, K Voloshin, S A Voloshin,G Volpe, B von Haller,I Vorobyev, D Voscek, J Vrláková,B Wagner,M Weber,S G Weber, A Wegrzynek,D F Weiser, S C Wenzel, J P Wessels,E Widmann, J Wiechula, J Wikne,G Wilk,J Wilkinson,G A Willems, E Willsher, B Windelband,W E Witt, M Winn,Y Wu,R Xu, S Yalcin,K Yamakawa, S Yang, S Yano, Z Yin, H Yokoyama, I-K Yoo, J H Yoon, S Yuan, A Yuncu, V Yurchenko, V Zaccolo, A Zaman, C Zampolli, H J C Zanoli, N Zardoshti, A Zarochentsev, P Závada, N Zaviyalov, H Zbroszczyk, M Zhalov, X Zhang, Z Zhang, C Zhao, V Zherebchevskii, N Zhigareva, D Zhou, Y Zhou, Z Zhou, J Zhu, Y Zhu, A Zichichi, M B Zimmermann, G Zinovjev, N Zurlo
PHYSICAL REVIEW LETTERS（2019）
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摘要
The first measurement of the Upsilon(1S) elliptic flow coefficient (v(2)) is performed at forward rapidity (2.5 < y < 4) in Pb-Pb collisions at root s(NN) = 5.02 TeV with the ALICE detector at the LHC. The results are obtained with the scalar product method and are reported as a function of transverse momentum (pT) up to 15 GeV/c in the 5%-60% centrality interval. The measured Upsilon(1S)v(2) is consistent with 0 and with the small positive values predicted by transport models within uncertainties. The v(2) coefficient in 2 < p(T) < 15 GeV=c is lower than that of inclusive J/psi mesons in the same p(T) interval by 2.6 standard deviations. These results, combined with earlier suppression measurements, are in agreement with a scenario in which the Upsilon(1S) production in Pb-Pb collisions at LHC energies is dominated by dissociation limited to the early stage of the collision, whereas in the J/psi case there is substantial experimental evidence of an additional regeneration component.
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