学術雑誌論文 Insight into particle production mechanisms via angular correlations of identified particles in pp collisions at s√=7 TeV

ALICE Collaboration  ,  Busch , O.  ,  Chujo , T.  ,  Esumi, S.  ,  Miake, Y.

77 ( 8 )  , p.569 , 2017-08 , Springer
ISSN:1434-6044
NII書誌ID(NCID):AA11188397
内容記述
Two-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 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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