### Abstract

We present results for the large-p_{T} inclusive π^{0} production in p-p and A-A collisions at RHIC and LHC energies. We include the full next-to-leading order radiative corrections, O(α_{s}^{3}), and nuclear effects such as parton energy loss and nuclear shadowing. We find the next-to-leading order corrections and the parton energy loss effect to be large and p_{T}-dependent, while the nuclear shadowing effects are small (<10%). We calculate the ratio of prompt photons to neutral pions produced in heavy-ion collisions and show that at RHIC energies this ratio increases with p_{T} approaching one at p_{T}∼8 GeV, due to the large suppression of π^{0} production. We show that at the LHC, this ratio has a steep p_{T}-dependence and approaches 25% effect at p_{T}∼40 GeV. We discuss theoretical uncertainties inherent in our calculation, such as choice of the renormalization, factorization and fragmentation scales and the K-factors which signify the size of higher-order corrections.

Original language | English (US) |
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Pages (from-to) | 467-482 |

Number of pages | 16 |

Journal | Nuclear Physics A |

Volume | 723 |

Issue number | 3-4 |

DOIs | |

State | Published - Aug 11 2003 |

### ASJC Scopus subject areas

- Nuclear and High Energy Physics

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## Cite this

_{T}inclusive π

^{0}production in heavy-ion collisions at RHIC and LHC.

*Nuclear Physics A*,

*723*(3-4), 467-482. https://doi.org/10.1016/S0375-9474(03)01447-7