ALICE CollaborationGonzález Ferreiro, Elena2020-05-202020-05-202017Adam, J., Adamová, D., Aggarwal, M.M. et al. Insight into particle production mechanisms via angular correlations of identified particles in pp collisions at √s=7 TeV. Eur. Phys. J. C 77, 569 (2017). https://doi.org/10.1140/epjc/s10052-017-5129-61434-6044http://hdl.handle.net/10347/22489Two-particle angular correlations were measured in pp collisions at √ 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 purposeMonte Carlo generators. However, for baryon–baryon and anti-baryon–anti-baryon pairs, where both particles have the same baryon number, a near-side anticorrelation 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.eng© CERN for the benefit of the ALICE collaboration 2017. This article is an open access publication. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.http://creativecommons.org/licenses/by/4.0/journal article10.1140/epjc/s10052-017-5129-61434-6052open access