Inclusive dijet production at low Bjorken-x in deep inelastic scattering

A Aktas; Yves Coppens; John Dowell; Peter Faulkner; Yves Fleming; John Garvey; Oliver Henshaw; Carrie Johnson; Ian Kenyon; Paul Newman; Syed Rizvi; Paul Thompson; Ethan-Etienne Woehrling

doi:10.1140/epjc/s2004-01644-5

Inclusive dijet production at low Bjorken-x in deep inelastic scattering

A Aktas, Yves Coppens, John Dowell, Peter Faulkner, Yves Fleming, John Garvey, Oliver Henshaw, Carrie Johnson, Ian Kenyon, Paul Newman, Syed Rizvi, Paul Thompson, Ethan-Etienne Woehrling

Physics and Astronomy

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35 Citations (Scopus)

Abstract

Dijet production in deep inelastic ep scattering is investigated in the region of low values of the Bjorken-variable x (10(-4) <x <10(-2)) and low photon virtualities Q(2) (5 <Q(2) <100 GeV2). The measured dijet cross sections are compared with perturbative QCD calculations in next-to-leading order. For most dijet variables studied, these calculations can provide a reasonable description of the data over the full phase space region covered, including the region of very low x. However, large discrepancies at low x and low Q(2) are observed for events with small separation in azimuth between the two highest transverse momentum jets. This region of phase space is described better by predictions based on the CCFM evolution equation, which incorporates k(t) factorized unintegrated parton distributions. A reasonable description can be also obtained using the Color Dipole Model or models incorporating virtual photon structure.

Original language	English
Pages (from-to)	477
Number of pages	1
Journal	European Physical Journal C
Volume	33
Issue number	4
DOIs	https://doi.org/10.1140/epjc/s2004-01644-5
Publication status	Published - 1 Mar 2004

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title = "Inclusive dijet production at low Bjorken-x in deep inelastic scattering",

abstract = "Dijet production in deep inelastic ep scattering is investigated in the region of low values of the Bjorken-variable x (10(-4) <x <10(-2)) and low photon virtualities Q(2) (5 <Q(2) <100 GeV2). The measured dijet cross sections are compared with perturbative QCD calculations in next-to-leading order. For most dijet variables studied, these calculations can provide a reasonable description of the data over the full phase space region covered, including the region of very low x. However, large discrepancies at low x and low Q(2) are observed for events with small separation in azimuth between the two highest transverse momentum jets. This region of phase space is described better by predictions based on the CCFM evolution equation, which incorporates k(t) factorized unintegrated parton distributions. A reasonable description can be also obtained using the Color Dipole Model or models incorporating virtual photon structure.",

author = "A Aktas and Yves Coppens and John Dowell and Peter Faulkner and Yves Fleming and John Garvey and Oliver Henshaw and Carrie Johnson and Ian Kenyon and Paul Newman and Syed Rizvi and Paul Thompson and Ethan-Etienne Woehrling",

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doi = "10.1140/epjc/s2004-01644-5",

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TY - JOUR

T1 - Inclusive dijet production at low Bjorken-x in deep inelastic scattering

AU - Aktas, A

AU - Coppens, Yves

AU - Dowell, John

AU - Faulkner, Peter

AU - Fleming, Yves

AU - Garvey, John

AU - Henshaw, Oliver

AU - Johnson, Carrie

AU - Kenyon, Ian

AU - Newman, Paul

AU - Rizvi, Syed

AU - Thompson, Paul

AU - Woehrling, Ethan-Etienne

PY - 2004/3/1

Y1 - 2004/3/1

N2 - Dijet production in deep inelastic ep scattering is investigated in the region of low values of the Bjorken-variable x (10(-4) <x <10(-2)) and low photon virtualities Q(2) (5 <Q(2) <100 GeV2). The measured dijet cross sections are compared with perturbative QCD calculations in next-to-leading order. For most dijet variables studied, these calculations can provide a reasonable description of the data over the full phase space region covered, including the region of very low x. However, large discrepancies at low x and low Q(2) are observed for events with small separation in azimuth between the two highest transverse momentum jets. This region of phase space is described better by predictions based on the CCFM evolution equation, which incorporates k(t) factorized unintegrated parton distributions. A reasonable description can be also obtained using the Color Dipole Model or models incorporating virtual photon structure.

AB - Dijet production in deep inelastic ep scattering is investigated in the region of low values of the Bjorken-variable x (10(-4) <x <10(-2)) and low photon virtualities Q(2) (5 <Q(2) <100 GeV2). The measured dijet cross sections are compared with perturbative QCD calculations in next-to-leading order. For most dijet variables studied, these calculations can provide a reasonable description of the data over the full phase space region covered, including the region of very low x. However, large discrepancies at low x and low Q(2) are observed for events with small separation in azimuth between the two highest transverse momentum jets. This region of phase space is described better by predictions based on the CCFM evolution equation, which incorporates k(t) factorized unintegrated parton distributions. A reasonable description can be also obtained using the Color Dipole Model or models incorporating virtual photon structure.

U2 - 10.1140/epjc/s2004-01644-5

DO - 10.1140/epjc/s2004-01644-5

M3 - Article

VL - 33

SP - 477

JO - European Physical Journal C

JF - European Physical Journal C

IS - 4

ER -

Inclusive dijet production at low Bjorken-x in deep inelastic scattering

Abstract

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