Observation of Enhanced Double Parton Scattering in Proton-Lead Collisions at √ s N N = 8.16 TeV

Physical Review Letters 2020
Kārlis Dreimanis, Collaboration LHCb

A study of prompt charm-hadron pair production in proton-lead collisions at √ s N N = 8.16     TeV is performed using data corresponding to an integrated luminosity of about 30     nb − 1 , collected with the LHCb experiment. Production cross sections for different pairs of charm hadrons are measured and kinematic correlations between the two charm hadrons are investigated. This is the first measurement of associated production of two charm hadrons in proton-lead collisions. The results confirm the predicted enhancement of double parton scattering production in proton-lead collisions compared to the single parton scattering production.

DOI
10.1103/PhysRevLett.125.212001
Hyperlink
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.125.212001

The LHCb Collaboration, Aaij, R., Abellán Beteta, C., Dreimanis, K. ... [et al.] Observation of Enhanced Double Parton Scattering in Proton-Lead Collisions at √ s N N = 8.16 TeV. Physical Review Letters, 2020, Vol. 125, No. 21, Article number 212001. ISSN 0031-9007. e-ISSN 1079-7114. Available from: doi:10.1103/PhysRevLett.125.212001

Publication language
English (en)