Hard photon production and matrix-element parton-shower merging

Journal Article · Mon Feb 01 00:00:00 EST 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.034026· OSTI ID:21409181

Hoeche, Stefan ^[1]; Schumann, Steffen ^[2]; Siegert, Frank ^[3]

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1. Institut fuer Theoretische Physik, Universitaet Zuerich, CH-8057 Zuerich (Switzerland)
2. Institut fuer Theoretische Physik, Universitaet Heidelberg, D-69120, Heidelberg (Germany)
3. Institute for Particle Physics Phenomenology, Durham University, Durham DH1 3LE (United Kingdom)

We present a Monte Carlo approach to prompt-photon production, where photons and QCD partons are treated democratically. The photon fragmentation function is modeled by an interleaved QCD+QED parton shower. This known technique is improved by including higher-order real-emission matrix elements. To this end, we extend a recently proposed algorithm for merging matrix elements and truncated parton showers. We exemplify the quality of the Monte Carlo predictions by comparing them to measurements of the photon fragmentation function at LEP and to measurements of prompt photon and diphoton production from the Tevatron experiments.

• OSTI ID: 21409181
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 3; Other Information: DOI: 10.1103/PhysRevD.81.034026; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGORITHMS
EMISSION
FERMILAB TEVATRON
FORECASTING
FRAGMENTATION
LEP STORAGE RINGS
MATRIX ELEMENTS
MONTE CARLO METHOD
PARTICLE PRODUCTION
PHOTONS
QUANTUM CHROMODYNAMICS
QUANTUM ELECTRODYNAMICS
ACCELERATORS
BOSONS
CALCULATION METHODS
CYCLIC ACCELERATORS
ELECTRODYNAMICS
ELEMENTARY PARTICLES
FIELD THEORIES
MASSLESS PARTICLES
MATHEMATICAL LOGIC
QUANTUM FIELD THEORY
STORAGE RINGS
SYNCHROTRONS