Neutral pion and η meson production in proton-proton collisions at s √ =0.9 TeV and s √ =7 TeV
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Publication date
2012
Authors
Abelev, B.I.
Chojnacki, M.
Christakoglou, P.
de Rooij, R. S.
Grelli, A.
Luparello, G.
Mischke, A.
Nooren, G
Peitzmann, T.
Reicher, M.
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Abstract
The first measurements of the invariant differential cross sections of inclusive π0 and η meson production at mid-rapidity in proton–proton collisions at √ s = 0.9 TeV and √ s = 7 TeV are reported. The π0 measurement covers the ranges 0.4 <pT <7 GeV/c and 0.3 <pT <25 GeV/c for these two energies, respectively. The production of η mesons was measured at √ s = 7 TeV in the range 0.4 <pT <15 GeV/c. Next-to-Leading Order perturbative QCD calculations, which are consistent with the π0 spectrum at √ s = 0.9 TeV, overestimate those of π0 and η mesons at √ s = 7 TeV, but agree with the measured η/π0 ratio at √ s =7 TeV.
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Abelev, B I, Chojnacki, M, Christakoglou, P, de Rooij, R S, Grelli, A, Luparello, G, Mischke, A, Nooren, G J L, Peitzmann, T, Reicher, M, Snellings, R J M, Thomas, D, van Leeuwen, M, Veldhoen, M, Verweij, M, Zhou, Y & Zynovyev, M 2012, 'Neutral pion and η meson production in proton-proton collisions at s √ =0.9 TeV and s √ =7 TeV', Physics Letters B, vol. 717, no. 1-3, pp. 162-172. https://doi.org/10.1016/j.physletb.2012.09.015