TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Jashal, B. K.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Remon Alepuz, C.
AU  - Ruiz Vidal, J.
AU  - Sanderswood, I.
PY  - 2023
DA  - 2023//
TI  - Nuclear Modification Factor of Neutral Pions in the Forward and Backward Regions in p-Pb Collisions
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 042302
EP  - 12pp
VL  - 131
IS  - 4
PB  - Amer Physical Soc
AB  - The nuclear modification factor of neutral pions is measured in proton-lead collisions collected at a center-of-mass energy per nucleon of 8.16 TeV with the LHCb detector. The p(0) production cross section is measured differentially in transverse momentum (p(T)) for 1.5 < p(T) < 10.0 GeV and in center-of-mass pseudorapidity (?(c.m.)) regions 2.5 < ?(c.m.) < 3.5 (forward) and -4.0 < ?(c.m.) < -3.0 (backward) defined relative to the proton beam direction. The forward measurement shows a sizable suppression of p(0) production, while the backward measurement shows the first evidence of p(0) enhancement in proton-lead collisions at the LHC. Together, these measurements provide precise constraints on models of nuclear structure and particle production in high-energy nuclear collisions.
SN  - 0031-9007
UR  - https://arxiv.org/abs/2204.10608
UR  - https://doi.org/10.1103/PhysRevLett.131.042302
DO  - 10.1103/PhysRevLett.131.042302
LA  - English
N1  - WOS:001063259300002
ID  - LHCbCollaborationAaij_etal2023
ER  -