Direct hadron production in hadronic collisions

François Arleo; Stanley J. Brodsky; Dae Sung Hwang; Anne M. Sickles

doi:10.1016/j.nuclphysbps.2010.10.021

Direct hadron production in hadronic collisions

François Arleo, Stanley J. Brodsky, Dae Sung Hwang, Anne M. Sickles

Research output: Contribution to journal › Article › peer-review

Abstract

The scaling behavior of the invariant production cross section is a powerful tool in order to probe the dynamics of particle production. Here, we investigate the scaling properties of large-p_⊥ hadron, jet and prompt photon production in hadronic collisions by comparing systematically world data to NLO QCD predictions. In the hadron sector a significant discrepancy is reported, while prompt photon and jet production data prove in agreement with leadingtwist expectations. We interpret these results as coming from a non-negligible contribution of higher-twist processes, in which the hadron is produced directly in the hard subprocess. Predictions at RHIC are successfully compared to PHENIX preliminary measurements and LHC predictions are given.

Original language	English (US)
Pages (from-to)	81-84
Number of pages	4
Journal	Nuclear Physics B - Proceedings Supplements
Volume	207-208
Issue number	1 C
DOIs	https://doi.org/10.1016/j.nuclphysbps.2010.10.021
State	Published - 2010
Externally published	Yes

Keywords

Hadron production
Hadronic colliders
Higher twist

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics

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title = "Direct hadron production in hadronic collisions",

abstract = "The scaling behavior of the invariant production cross section is a powerful tool in order to probe the dynamics of particle production. Here, we investigate the scaling properties of large-p⊥ hadron, jet and prompt photon production in hadronic collisions by comparing systematically world data to NLO QCD predictions. In the hadron sector a significant discrepancy is reported, while prompt photon and jet production data prove in agreement with leadingtwist expectations. We interpret these results as coming from a non-negligible contribution of higher-twist processes, in which the hadron is produced directly in the hard subprocess. Predictions at RHIC are successfully compared to PHENIX preliminary measurements and LHC predictions are given.",

keywords = "Hadron production, Hadronic colliders, Higher twist",

author = "Fran{\c c}ois Arleo and Brodsky, {Stanley J.} and Hwang, {Dae Sung} and Sickles, {Anne M.}",

note = "Funding Information: We thank A. Bazilevsky for providing us with Fig. 5. FA thanks CERN-TH for hospitality. SJB was supported by the Department of Energy under contract DE-AC02-76SF00515. DSH was supported by the In- Funding Information: ternational Cooperation Program of the KICOS and the Korea Research Foundation Grant (KRF-2008-313-C00166). AMS was supported by the Department of Energy under contract DE-AC02-98CH10886.",

year = "2010",

doi = "10.1016/j.nuclphysbps.2010.10.021",

language = "English (US)",

volume = "207-208",

pages = "81--84",

journal = "Nuclear and Particle Physics Proceedings",

issn = "2405-6014",

publisher = "Elsevier",

number = "1 C",

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TY - JOUR

T1 - Direct hadron production in hadronic collisions

AU - Arleo, François

AU - Brodsky, Stanley J.

AU - Hwang, Dae Sung

AU - Sickles, Anne M.

N1 - Funding Information: We thank A. Bazilevsky for providing us with Fig. 5. FA thanks CERN-TH for hospitality. SJB was supported by the Department of Energy under contract DE-AC02-76SF00515. DSH was supported by the In- Funding Information: ternational Cooperation Program of the KICOS and the Korea Research Foundation Grant (KRF-2008-313-C00166). AMS was supported by the Department of Energy under contract DE-AC02-98CH10886.

PY - 2010

Y1 - 2010

N2 - The scaling behavior of the invariant production cross section is a powerful tool in order to probe the dynamics of particle production. Here, we investigate the scaling properties of large-p⊥ hadron, jet and prompt photon production in hadronic collisions by comparing systematically world data to NLO QCD predictions. In the hadron sector a significant discrepancy is reported, while prompt photon and jet production data prove in agreement with leadingtwist expectations. We interpret these results as coming from a non-negligible contribution of higher-twist processes, in which the hadron is produced directly in the hard subprocess. Predictions at RHIC are successfully compared to PHENIX preliminary measurements and LHC predictions are given.

AB - The scaling behavior of the invariant production cross section is a powerful tool in order to probe the dynamics of particle production. Here, we investigate the scaling properties of large-p⊥ hadron, jet and prompt photon production in hadronic collisions by comparing systematically world data to NLO QCD predictions. In the hadron sector a significant discrepancy is reported, while prompt photon and jet production data prove in agreement with leadingtwist expectations. We interpret these results as coming from a non-negligible contribution of higher-twist processes, in which the hadron is produced directly in the hard subprocess. Predictions at RHIC are successfully compared to PHENIX preliminary measurements and LHC predictions are given.

KW - Hadron production

KW - Hadronic colliders

KW - Higher twist

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EP - 84

JO - Nuclear and Particle Physics Proceedings

JF - Nuclear and Particle Physics Proceedings

SN - 2405-6014

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