Transverse-momentum distribution and nuclear modification factor for neutral pions in the forward-rapidity region in proton-lead collisions at s NN =5.02 TeV

O. Adriani, E. Berti, L. Bonechi, M. Bongi, G. Castellini, R. D'Alessandro, M. Del Prete, M. Haguenauer, Y. Itow, K. Kasahara, K. Kawade, Y. Makino, K. Masuda, E. Matsubayashi, H. Menjo, G. Mitsuka, Y. Muraki, P. Papini, A. L. Perrot, D. PfeifferS. Ricciarini, T. Sako, N. Sakurai, T. Suzuki, T. Tamura, A. Tiberio, Shoji Torii, A. Tricomi, W. C. Turner

    研究成果査読

    25 被引用数 (Scopus)

    抄録

    The transverse momentum (pT) distribution for inclusive neutral pions in the very forward rapidity region has been measured, with the Large Hadron Collider forward detector (LHCf), in proton-lead collisions at nucleon-nucleon center-of-mass energies of sNN=5.02TeV at the LHC. The pT spectra obtained in the rapidity range -11.0<ylab<-8.9 and 0<pT<0.6GeV (in the detector reference frame) show a strong suppression of the production of neutral pions after taking into account ultraperipheral collisions. This leads to a nuclear modification factor value, relative to the interpolated pT spectra in proton-proton collisions at s=5.02TeV, of about 0.1-0.4. This value is compared with the predictions of several hadronic interaction Monte Carlo simulations.

    本文言語English
    論文番号065209
    ジャーナルPhysical Review C - Nuclear Physics
    89
    6
    DOI
    出版ステータスPublished - 2014 6 23

    ASJC Scopus subject areas

    • 核物理学および高エネルギー物理学

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