and meson production in proton-proton collisions at TeV
S. Acharya, Jaroslav Adam, D. Adamová, Jonatan Adolfsson,M. M. Aggarwal,G. Aglieri Rinella,M. Agnello,N. Agrawal, Z. Ahammed,N. Ahmad,S. U. Ahn,S. Aiola,A. Akindinov, Mohammad Al-turany,Sk Noor Alam, Jose Luis Bazo Alba, D. S. D. Albuquerque,D. Aleksandrov, B. Alessandro,R. Alfaro Molina, A. Alici, A. Alkin, J. Alme, T. Alt, Lucas Altenkamper, I. Altsybeev,C. Alves Garcia Prado, C. Andrei, Dimitra Andreou, Harry Arthur Andrews, A. Andronic, V. Anguelov, C. Anson, T. Antičić, F. Antinori,P. Antonioli,Rafay Anwar,L. Aphecetche, H. Appelshäuser, S. Arcelli,R. Arnaldi,O. W. Arnold, Ionut Cristian Arsene, M. Arslandok, B. Audurier,A. Augustinus, R. Averbeck,M. D. Azmi,A. Badalà, Yong Wook Baek, S. Bagnasco, R. Bailhache,R. Bala, A. Baldisseri,M. Ball,R. C. Baral, A. M. Barbano, R. Barbera,F. Barile, Luca Barioglio,G. G. Barnaföldi,Lee Stuart Barnby, V. Barret,P. Bartalini,K. Barth,E. Bartsch, M. Basile, Nicole Bastid,Sumit Basu,G. Batigne,B. Batyunya,P. C. Batzing,I. G. Bearden,H. Beck,C. Bedda, N. K. Behera, I. Belikov, Francesca Bellini,H. Bello Martinez,R. Bellwied, Lucina Gabriela Espinoza Beltran, V. Belyaev,G. Bencedi,S. Beole,A. Bercuci,Y. Berdnikov,D. Berenyi,R. A. Bertens,D. Berzano, L. Betev,A. Bhasin,I. R. Bhat,A. K. Bhati,B. Bhattacharjee, J. Bhom,Antonio Bianchi,L. Bianchi,N. Bianchi, C. Bianchin,Jaroslav Bielcik, J. Bielcikova,Ante Bilandzic,G. Biro,R. Biswas,S. Biswas,J. T. Blair, D. Blau, C. Blume,G. Boca, F. Bock,A. Bogdanov, L. Boldizsar,M. Bombara, G. Bonomi, Matthias Bonora, J. Book,H. Borel,A. Borissov, M. Borri,E. Botta,C. Bourjau, Lars Bratrud, P. Braun-Munzinger, Marco Bregant,T. A. Broker, M. Broz, E. Brucken, E. Bruna, Giuseppe Eugenio Bruno, D. Budnikov, H. Buesching, S. Bufalino,Paul Buhler, P. Buncic, O. Busch,Z. Buthelezi,J. Butt,J. T. Buxton, Jan Cabala, D. Caffarri,H. Caines,A. Caliva,E. Calvo Villar,P. Camerini, Aaron Allan Capon,F. Carena,F. Carnesecchi,J. Castillo Castellanos,A. Castro,E. A. R. Casula, C. Ceballos Sanchez,P. Cerello, Sinjini Chandra,B. Chang,S. Chapeland, M. Chartier,S. Chattopadhyay,A. Chauvin, C. Cheshkov,B. Cheynis,V. Chibante Barroso,D. D. Chinellato,S. Cho, P. Chochula,M. Chojnacki, S. Choudhury,Tasnuva Chowdhury, P. Christakoglou, C. H. Christensen,P. Christiansen, T. Chujo,S. U. Chung, C. Cicalo, L. Cifarelli, F. Cindolo,J. Cleymans, F. Colamaria,D. Colella, A. Collu,M. Colocci, Matteo Concas,G. Conesa Balbastre,Z. Conesa del Valle,M. E. Connors, J. G. Contreras,Thomas Michael Cormier,Y. Corrales Morales,I. Cortés Maldonado,P. Cortese,M. R. Cosentino,F. Costa, S. Costanza, Jana Crkovska, P. Crochet, E. Cuautle,L. Cunqueiro, T. Dahms,A. Dainese, Meike Charlotte Danisch,A. Danu,D. Das,I. Das, Supriya Das,A. Dash, Sadhana Dash,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. Derradi de Souza, Hermann Franz Degenhardt, A. Deisting,A. Deloff, C. Deplano,P. Dhankher, D. Di Bari,A. Di Mauro,P. Di Nezza,B. Di Ruzza, T. Dietel,P. Dillenseger, R. Divià,Ø. Djuvsland, A. Dobrin,D. Domenicis Gimenez,B. Dönigus,O. Dordic, L. V. R. Doremalen,A. K. Dubey,A. Dubla,L. Ducroux, Ashpreet Kaur Duggal, Mallick Dukhishyam,Pascal Dupieux,R. J. Ehlers,D. Elia,E. Endress,H. Engel, E. Epple,B. Erazmus,F. Erhardt, B. Espagnon,S. Esumi, Giulio Eulisse,J. Eum,D. Evans,S. Evdokimov, L. Fabbietti,Julien Faivre,A. Fantoni, M. Fasel,L. Feldkamp, A. Feliciello, G. Feofilov,A. Fernández Téllez,A. Ferretti,A. Festanti,Victor Jose Gaston Feuillard,J. Figiel,M. A. S. Figueredo,S. Filchagin, D. Finogeev,Fiorella Fionda,M. Floris,S. Foertsch,P. Foka,S. Fokin,E. Fragiacomo, A. Francescon, Audrey Francisco,U. Frankenfeld, Gabriele Gaetano Fronze, U. Fuchs,Christophe Furget,A. Furs, M. Fusco Girard,J. J. Gaardhøje, M. Gagliardi,A. M. Gago,Katarina Gajdosova,M. Gallio, Carlos Duarte Galvan,P. Ganoti,C. Garabatos,E. Garcia-Solis,Kunal Garg, C. Gargiulo,P. Gasik,E. F. Gauger,Marie Germain,Jhuma Ghosh,P. Ghosh,S. K. Ghosh,P. Gianotti,Paolo Giubellino, P. Giubilato,E. Gladysz-Dziadus,P. Glässel,D. M. Goméz Coral,A. Gomez Ramirez,A. S. 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,J. M. Gronefeld, Fabrizio Grosa,J. F. Grosse-Oetringhaus,R. Grosso,L. Gruber,F. Guber,Rachid Guernane, B. Guerzoni, K. Gulbrandsen,T. Gunji,A. Gupta,R. Gupta, Irais Bautista Guzman, R. Haake, C. Hadjidakis,Hideki Hamagaki, G. Hamar, Julien Charles Hamon,M. R. Haque, J. W. Harris,A. Harton,Hadi Hassan, D. Hatzifotiadou,S. Hayashi,S. T. Heckel,Ernst Hellbar,H. Helstrup, A. Herghelegiu, Emma Gonzalez Hernandez,G. Herrera Corral,Florian Herrmann,B. A. Hess,K. F. Hetland,H. Hillemanns, Christopher Hills,B. Hippolyte, J. Hladky, Bernhard Hohlweger,D. Horak, Sebastian Hornung, Ritsuya Hosokawa, P. Hristov,Charles E. Hughes,T. J. Humanic,N. Hussain,T. Hussain, D. Hutter,D. S. Hwang,S. A. Iga Buitron,R. Ilkaev, M. Inaba,M. Ippolitov,M. Irfan,M. S. Islam,M. Ivanov,V. Ivanov,V. Izucheev,B. V. Jacak,N. Jacazio, P. Jacobs,M. B. Jadhav,J. Jadlovsky, Syaefudin Jaelani, C. Jahnke,M. J. Jakubowska, M. A. Janik,P. H. S. Y. Jayarathna,C. Jena, S. Jena,Marko Jercic,R. T. Jimenez Bustamante, P. G. Jones, A. Jusko,P. Kalinak,A. Kalweit,J. H. Kang,V. Kaplin,S. Kar, A. Karasu Uysal,O. Karavichev, T. Karavicheva, L. Karayan, Przemyslaw Karczmarczyk, E. Karpechev,U. Kebschull, R. Keidel, D. L. D. Keijdener, M. Keil,B. Ketzer, Zhanna Khabanova,P. Khan,S. A. Khan, A. Khanzadeev,Y. Kharlov,Anisa Khatun, Arvind Khuntia,Miroslaw Marek Kielbowicz, Bjarte Kileng, Byungchul Kim,Daehyeok Kim,D. J. Kim, H. J. Kim, Jinsook Kim, J. Kim,M. Kim, S. Kim, T. Kim,S. Kirsch, I. Kisel,S. Kiselev,A. Kisiel,G. Kiss,Jennifer Lynn Klay, C. Klein,J. Klein,C. Klein-Bösing,S. Klewin,A. Kluge,Michael Linus Knichel,A. G. Knospe,C. Kobdaj,M. Kofarago, Markus Konrad Köhler, T. Kollegger,V. Kondratiev,N. Kondratyeva,E. Kondratyuk, A. Konevskikh,M. Konyushikhin, M. Kopcik,M. Kour,C. Kouzinopoulos,O. Kovalenko,V. Kovalenko,M. Kowalski,G. Koyithatta Meethaleveedu, I. Králik, A. Kravčáková, Lukas Kreis, M. Krivda,F. Krizek,E. Kryshen,Mikolaj Krzewicki,A. M. Kubera,V. Kučera,C. Kuhn,P. G. Kuijer,Amit Kumar,J. Kumar,L. Kumar,S. Kumar,Sourav Kundu, P. Kurashvili,A. Kurepin, A. B. Kurepin,A. Kuryakin,S. Kushpil,M. J. Kweon, Y. Kwon,S. L. La Pointe, P. La Rocca,C. Lagana Fernandes,Yue Shi Lai,I. Lakomov, R. Langoy,K. Lapidus,C. Lara, Antoine Xavier Lardeux,A. Lattuca,E. Laudi, Roman Lavicka,R. Lea, L. Leardini, S. Lee, F. Lehas, S. Lehner, Johannes Lehrbach, R. C. Lemmon,V. Lenti,E. Leogrande,I. León Monzón,P. Lévai, X. Q. Li,J. Lien, R. Lietava, Bong-hwi Lim,S. Lindal,Volker Lindenstruth, Scott William Lindsay,C. Lippmann,M. A. Lisa,Vladyslav Litichevskyi,W. J. Llope,D. F. Lodato,P. I. Loenne,V. Loginov,C. Loizides,Petra Loncar,X. Lopez,E. López Torres, A. J. Lowe,P. Luettig, Jens Robert Luhder, M. Lunardon, G. Luparello, Matteo Lupi,T. H. Lutz,A. Maevskaya,M. Mager,S. Mahajan, Sohail Musa Mahmood,A. Maire, R. Majka,M. Malaev,L. Malinina,D. Mal’Kevich,P. Malzacher,A. Mamonov,V. Manko, F. Manso, V. Manzari,Yaxian Mao,M. Marchisone, J. Mareš,G. V. Margagliotti,A. Margotti,J. Margutti,A. Marín,C. Markert, M. Marquard, N. A. Martin,P. Martinengo,J. A. L. Martinez,M. I. Martínez, G. Martínez García, M. Martinez Pedreira, S. Masciocchi,M. Masera,A. Masoni, Erwann Masson,A. Mastroserio, Andreas Michael Mathis, Paula Fernanda Toledo Matuoka,A. Matyja,C. Mayer,J. Mazer, Marianna Mazzilli,M. A. Mazzoni,F. Meddi,Y. Melikyan,A. Menchaca-Rocha, E. Meninno, J. Mercado Pérez, M. Meres, Sibaliso Mhlanga,Y. Miake,M. M. Mieskolainen,D. L. Mihaylov,K. Mikhaylov,J. Milosevic,A. Mischke, A. N. Mishra, D. Miśkowiec,J. Mitra,C. M. Mitu,N. Mohammadi,B. Mohanty, M. M. Khan,D. A. Moreira De Godoy, L. A. P. Moreno,S. Moretto,Astrid Morreale,A. Morsch, V. Muccifora,E. Mudnic,D. Mühlheim,S. Muhuri,M. 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Wilkinson, Guido Alexander Willems, M. C. S. Williams, Emily Willsher, B. Windelband, William Edward Witt, S. Yalcin, Kosei Yamakawa, P. Yang, S. Yano, Z. Yin, H. Yokoyama,I. K. Yoo, J. H. Yoon,V. Yurchenko, V. Zaccolo, A. Zaman, C. Zampolli, H. J. C. Zanoli, N. Zardoshti, A. Zarochentsev,P. Závada, N. Zaviyalov, H. Zbroszczyk, M. Zhalov, Haitao Zhang, X. Zhang, Y. Zhang, C. Zhang, Z. Zhang, C. Zhao, N. Zhigareva, D. Zhou, Y. Zhou, Zhuo Zhou, H. Zhu, J. Zhu, A. Zichichi, A. Zimmermann, M. B. Zimmermann, G. Zinovjev, J. Zmeskal, Shuguang Zou
EUROPEAN PHYSICAL JOURNAL C（2018）
引用 51|浏览47
摘要
An invariant differential cross section measurement of inclusive pi(0) and eta meson production atmid-rapidity in pp collisions at root s = 8 TeV was carried out by the ALICE experiment at the LHC. The spectra of pi(0) and eta mesons were measured in transverse momentum ranges of 0.3 < p(T) < 35 GeV/c and 0.5 < p(T) < 35 GeV/c, respectively. Next-to-leading order perturbative QCD calculations using fragmentation functions DSS14 for the pi(0) and AESSS for the. overestimate the cross sections of both neutral mesons, although such calculations agree with the measured eta/pi(0) ratio within uncertainties. The results were also compared with PYTHIA 8.2 predictions for which the Monash 2013 tune yields the best agreement with the measured neutral meson spectra. The measurements confirm a universal behavior of the eta/pi(0) ratio seen forNA27, PHENIX and ALICE data for pp collisions from root s = 27.5 GeV to root s = 8 TeV within experimental uncertainties. A relation between the pi(0) and eta production cross sections for pp collisions at root s = 8 TeV is given by m(T) scaling for p(T) > 3.5 GeV/c. However, a deviation from this empirical scaling rule is observed for transverse momenta below p(T) < 3.5 GeV/c in the eta/pi(0) ratio with a significance of 6.2 sigma.
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