Insight into particle production mechanisms via angular correlations of identified particles in pp collisions at sqrt{mathrm{s}}=7\xa0TeV

J Adam,C Nattrass,J Oleniacz,R Scott,M Jercic,A Nyanin,E Scomparin,X Ren,J Alme,J C C Noris,Q Shou,R Nayak,L Betev,V Samsonov,L O D L Pimentel,L Musa,A Chauvin,A Kurepin,N K Behera,M Krzewicki,M Ippolitov,R Barbera,D Blau,A Khatun,K M Sielewicz,A Reshetin,P Garg,M Mukherjee,A K Dubey,C Bourjau,O Dordic,P Cortese,M Agnello,K Münning,R Divià,M Lupi,A M Veen,K Voloshin,R Preghenella,I Cortés Maldonado,F Colamaria,G S Pappalardo,A Telesca,U Kebschull,M Schmidt,H Hamagaki,F M Fionda,A Furs,O Kovalenko,S Trogolo,L Vinogradov,P Giubilato,R Haake,P Khan,P Crochet,J Bielčík,C Schiaua,V Vechernin,S Bufalino,M Colocci,B Hippolyte,K Lapidus,A Kuryakin,R Vernet,S Parmar,M Lunardon,J Takahashi,A I Sheikh,D F Weiser,I G Bearden,J Bielčíková,B Naik,A Maire,S Kundu,E Botta,J Faivre,I Lakomov,P Yang,S V Nesbo,R Singaraju,C Blume,S Evdokimov,S Jena,M Arslandok,P Sahoo,S G Weber,L Ronflette,A M Gago,I R Bhat,P Antonioli,E Meninno,E Kondratyuk,M A Janik,J Lien,A M Whitehead,S Sahoo,D Mühlheim,Y Melikyan,P Nomokonov,P Rosnet,F Carena,M Vala,A Zimmermann,S Nikulin,K Gulbrandsen,A Dainese,H A Andrews,M B Jadhav,D Caffarri,M A Diaz Corchero,L Ducroux,A Shabanov,S Rajput,M Sharma,S K Ghosh,A Utrobicic,M G Munhoz,T Dahms,R Renfordt,V Punin,J Lehrbach,A Danu,M Marchisone,D Horak,D Pagano,L G E Beltran,E Leogrande,D Stocco,M Tarhini,L A P Moreno,P Pillot,P Riedler,E Scapparone,A Mamonov,T A Broker,C Kuhn,M Kofarago,R Nania,H J C Zanoli,F Barile,B Alessandro,D Colella,B Windelband,K Choi,P Reichelt,L K Graczykowski,R Biswas,M Masera,A R Timmins,K Senosi,T J Humanic,N Smirnov,N Hussain,A Deisting,G Zinovjev,D Sarkar,S Sadhu,A Tikhonov,C Zhao,R Lea,L Milano,B Teyssier,R Sultanov,A Di Mauro,E Rogochaya,V Belyaev,M U Naru,P Dupieux,A Rossi,R Turrisi,A Mischke,P Malzacher,B Dönigus,J Onderwaater,T Gunji,R Rui,D D Chinellato,G Eulisse,S R Navarro,A Ferretti,P K Sahu,P Kurashvili,A Roy,S Vergara Limón,K Oyama,Y W Baek,R Anwar,S T Heckel,A Vodopyanov,Z Ahammed,V Vislavicius,S Raha,X Lopez,R Lietava,C Silvestre,E Karpechev,S M Mahmood,S Zimmermann,S Grigoryan,E López Torres,E Ryabinkin,A Caliva,T Karavicheva,F Sozzi,B Jacak,V Singhal,R Langoy,R A Bertens,B Bhattacharjee,P Gasik,I Selyuzhenkov,S Choudhury,R Grosso,G Trombetta,G Batigne,A Bilandzic,H Poppenborg,M Puccio,J Song,C J Myers,E Calvo Villar,P Ganoti,D Rathee,A Andronic,P Sett,N Poljak,S Lehner,G Simonetti,J Nystrand,P Foka,R Guernane,F Herrmann,T Richert,A Festanti,W Riegler,W Poonsawat,A Borissov,L Görlich,A Gupta,I Ravasenga,M Mohisin Khan,S A Voloshin,S Yano,A Zaman,V Yurchenko,H Zbroszczyk,S Masciocchi,E Endress,I Vorobyev,X Peng,S Filchagin,B T Rascanu,M Germain,S Fokin,J Otwinowski,L Cunqueiro,S Kiselev,J Pan,T Sinha,N Mohammadi,L Greiner,B Wagner,J Mazer,A Grelli,B Batyunya,N Zhigareva,P G Jones,M Bombara,O Vázquez Doce,T Siemiarczuk,T Sugitate,J Mareš,L Vickovic,R Shahoyan,O Busch,G V Margagliotti,B Sahlmuller,D Sekihata,F Meddi,J W Harris,P Ghosh,E Bruna,A Sandoval,C M Mitu,E Vercellin,C Alves Garcia Prado,E 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doi:10.1140/epjc/s10052-017-5129-6

Insight into particle production mechanisms via angular correlations of identified particles in pp collisions at sqrt{mathrm{s}}=7\xa0TeV

J Adam, C Nattrass + Show 1011 more

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https://doi.org/10.1140/epjc/s10052-017-5129-6

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Journal: The European Physical Journal C	Publication Date: Aug 1, 2017
Citations: 39	License type: open-access

Affiliation: Atomic Energy and Alternative Energies Commission, Warsaw University of Technology, University of Tennessee at Knoxville, University of Houston, Russian Academy of Sciences, University of Münster, Institut Pascal, Wayne State University, Purdue University West Lafayette, University of Lyon System, Variable Energy Cyclotron Centre, The Ohio State University, Goethe University Frankfurt, Universidade de São Paulo, Lawrence Berkeley National Laboratory, Helsinki Institute of Physics, Indian Institute of Technology Bombay, Yale University, University of Birmingham, Technical University of Košice, European Organization for Nuclear Research, Aligarh Muslim University, Panjab University, University of Santiago de Compostela, University of Strasbourg, Czech Academy of Sciences, University of Bergen, Utrecht University, Creighton University, Central China Normal University, Universidad Nacional Autónoma de México

#Particle Production Mechanisms #Pp Collisions + Show 8 more

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Abstract

Two-particle angular correlations were measured in pp collisions at sqrt{s} = 7 TeV for pions, kaons, protons, and lambdas, for all particle/anti-particle combinations in the pair. Data for mesons exhibit an expected peak dominated by effects associated with mini-jets and are well reproduced by general purpose Monte Carlo generators. However, for baryon–baryon and anti-baryon–anti-baryon pairs, where both particles have the same baryon number, a near-side anti-correlation structure is observed instead of a peak. This effect is interpreted in the context of baryon production mechanisms in the fragmentation process. It currently presents a challenge to Monte Carlo models and its origin remains an open question.

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