EPJ

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EPJ C - Particles and Fields
Particles and Fields


Eur. Phys. J. C 22, 129-132 (2001)
DOI: 10.1007/s1005201O0789

Scaling of single photon production in hadronic collisions

D.K. Srivastava

Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, Kolkata 700 064, India

(Received: 2 February 2001 / Revised version: 28 May 2001 / Published online: 5 October 2001 - © Springer-Verlag / Società Italiana di Fisica 2001 )

Abstract
Scaling of single photon production in pp and $p\overline{p}$ collisions is studied. It is empirically observed that the available data scales $\sim s^{1/2}/p_{\mathrm {T}}^5$ for $x_{\mathrm {T}}=2p_{\mathrm {T}}/s^{1/2} \leq 0.1$ and $\sim (s^{1/2})^{3.3}/p_{\mathrm {T}}^9$ for larger xT. The NLO pQCD predictions for pp collisions at an s1/2 of 200 and 5500 GeV, relevant for RHIC and LHC energies are seen to closely follow this scaling behavior. Implications for single photon production in heavy ion collisions are discussed.



© Società Italiana di Fisica, Springer-Verlag 2001

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