Bose-Einstein correlations of same-sign charged pions in the forward region in pp collisions at √s = 7TeV

Marco Adinolfi, Emma Buchanan, Andrew Cook, Jeremy Dalseno, Sam Harnew, James Kariuki, Samuel Maddrell-Mander, Paras Naik, Konstantinos Petridis, Gabriela Pomery, Eugenia Price, Claire Prouve, Renato Quagliani, Jonas Rademacker, Sophie Richards, Daniel Saunders, Nicola Skidmore, Jaap Velthuis

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Abstract

Bose-Einstein correlations of same-sign charged pions, produced in protonproton collisions at a 7TeV centre-of-mass energy, are studied using a data sample collected by the LHCb experiment. The signature for Bose-Einstein correlations is observed in the form of an enhancement of pairs of like-sign charged pions with small four-momentum difference squared. The charged-particle multiplicity dependence of the Bose-Einstein correlation parameters describing the correlation strength and the size of the emitting source is investigated, determining both the correlation radius and the chaoticity parameter. The measured correlation radius is found to increase as a function of increasing charged-particle multiplicity, while the chaoticity parameter is seen to decrease.
Original languageEnglish
JournalJournal of High Energy Physics
Volume2017
Issue number25
Early online date6 Dec 2017
DOIs
Publication statusPublished - Dec 2017

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    Bristol Consolidated Grant 2015-9

    Goldstein, J.

    1/10/1530/09/20

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    Cite this

    Adinolfi, M., Buchanan, E., Cook, A., Dalseno, J., Harnew, S., Kariuki, J., Maddrell-Mander, S., Naik, P., Petridis, K., Pomery, G., Price, E., Prouve, C., Quagliani, R., Rademacker, J., Richards, S., Saunders, D., Skidmore, N., & Velthuis, J. (2017). Bose-Einstein correlations of same-sign charged pions in the forward region in pp collisions at √s = 7TeV. Journal of High Energy Physics, 2017(25). https://doi.org/10.1007/JHEP12(2017)025