Insight into particle production mechanisms via angular correlations of identified particles in pp collisions at \(\sqrt{s}=7\) TeV
- Adam, Jaroslav
- Adamová, Dagmar
- Aggarwal, Madan M.
- Aglieri Rinella, Gianluca
- Agnello, Michelangelo
- Agrawal, Nikita
- Ahammed, Zubayer
- Ahmad, Shafiq F.
- Ahn, Sang Un
- Aiola, Salvatore
- Alme, Johan
- Helstrup, Håvard
- Hetland, Kristin Fanebust
- Kileng, Bjarte
- Nesbø, Simon Voigt
- Altinpinar, Sedat
- Djuvsland, Øystein
- Lønne, Per-Ivar
- Nystrand, Joakim
- Rehman, Attiq ur
- Røhrich, Dieter
- Tambave, Ganesh Jagannath
- Ullaland, Kjetil
- Velure, Arild
- Wagner, Boris
- Zhang, Hui
- Zhou, Zhuo
- Zhu, Hongsheng
- Arsene, Ionut Christian
- Bätzing, Paul Christoph
- Dordic, Olja
- Lardeux, Antoine Xavier
- Lindal, Svein
- Mahmood, Sohail Musa
- Milosevic, Jovan
- Qvigstad, Henrik
- Richter, Matthias
- Røed, Ketil
- Skaali, Toralf Bernhard
- Tveter, Trine Spedstad
- Wikne, Jon Christopher
- Zhao, Chengxin
- Langøy, Rune
- Lien, Jørgen André
- Akindinov, Alexander
- Alam, Sk Noor
- De Albuquerque, Danilo Silva
- Aleksandrov, Dimitry
- Alessandro, Bruno
- Alexandre, Didier
- ALICE, Collaboration
Publication date
March 2018
DOI Publisher
Springer Science and Business Media LLC Language
EnglishAbstract
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.publishedVersio
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