Differential Cross Sections of D*± Photoproduction in ep Collisions at HERA

ZEUS Collaboration

doi:10.1016/S0370-2693(97)00422-X

Differential Cross Sections of D*^± Photoproduction in ep Collisions at HERA

ZEUS Collaboration

Department of Physics

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

Abstract

Inclusive photoproduction of D*± in ep collisions at HERA has been measured with the ZEUS detector for photon-proton centre of mass energies in the range 115 < W < 280 GeV and photon virtuality Q2 < 4 GeV2. The cross section σ → D*X integrated over the kinematic region pDz.ast; ⊥ > 3 GeV and -1.5 < ηD* < 1.0 is (10.6 ± 1.7(stat.) ± 1.6 1.3 (syst.)) nb. Differential cross sections as functions of pD* ⊥, ηD* and W are given. The data are compared with two next-to-leading order perturbative QCD predictions. For a calculation using a massive charm scheme the predicted cross sections are smaller than the measured ones. A recent calculation using a massless charm scheme is in agreement with the data. © 1997 Published by Elsevier Science B.V.

Original language	American English
Pages (from-to)	192-206
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	401
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(97)00422-X
State	Published - May 22 1997

Disciplines

Physics

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Cite this

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title = "Differential Cross Sections of D*± Photoproduction in ep Collisions at HERA",

abstract = "Inclusive photoproduction of D*± in ep collisions at HERA has been measured with the ZEUS detector for photon-proton centre of mass energies in the range 115 < W < 280 GeV and photon virtuality Q2 < 4 GeV2. The cross section σ → D*X integrated over the kinematic region pDz.ast; ⊥ > 3 GeV and -1.5 < ηD* < 1.0 is (10.6 ± 1.7(stat.) ± 1.6 1.3 (syst.)) nb. Differential cross sections as functions of pD* ⊥, ηD* and W are given. The data are compared with two next-to-leading order perturbative QCD predictions. For a calculation using a massive charm scheme the predicted cross sections are smaller than the measured ones. A recent calculation using a massless charm scheme is in agreement with the data. {\textcopyright} 1997 Published by Elsevier Science B.V.",

author = "\{ZEUS Collaboration\} and Mattingly, \{Margarita C. K.\}",

year = "1997",

month = may,

day = "22",

doi = "10.1016/S0370-2693(97)00422-X",

language = "American English",

volume = "401",

pages = "192--206",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

number = "1-2",

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TY - JOUR

T1 - Differential Cross Sections of D*± Photoproduction in ep Collisions at HERA

AU - ZEUS Collaboration

AU - Mattingly, Margarita C. K.

PY - 1997/5/22

Y1 - 1997/5/22

N2 - Inclusive photoproduction of D*± in ep collisions at HERA has been measured with the ZEUS detector for photon-proton centre of mass energies in the range 115 < W < 280 GeV and photon virtuality Q2 < 4 GeV2. The cross section σ → D*X integrated over the kinematic region pDz.ast; ⊥ > 3 GeV and -1.5 < ηD* < 1.0 is (10.6 ± 1.7(stat.) ± 1.6 1.3 (syst.)) nb. Differential cross sections as functions of pD* ⊥, ηD* and W are given. The data are compared with two next-to-leading order perturbative QCD predictions. For a calculation using a massive charm scheme the predicted cross sections are smaller than the measured ones. A recent calculation using a massless charm scheme is in agreement with the data. © 1997 Published by Elsevier Science B.V.

AB - Inclusive photoproduction of D*± in ep collisions at HERA has been measured with the ZEUS detector for photon-proton centre of mass energies in the range 115 < W < 280 GeV and photon virtuality Q2 < 4 GeV2. The cross section σ → D*X integrated over the kinematic region pDz.ast; ⊥ > 3 GeV and -1.5 < ηD* < 1.0 is (10.6 ± 1.7(stat.) ± 1.6 1.3 (syst.)) nb. Differential cross sections as functions of pD* ⊥, ηD* and W are given. The data are compared with two next-to-leading order perturbative QCD predictions. For a calculation using a massive charm scheme the predicted cross sections are smaller than the measured ones. A recent calculation using a massless charm scheme is in agreement with the data. © 1997 Published by Elsevier Science B.V.

UR - https://digitalcommons.andrews.edu/pubs/2677

U2 - 10.1016/S0370-2693(97)00422-X

DO - 10.1016/S0370-2693(97)00422-X

M3 - Article

VL - 401

SP - 192

EP - 206

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -