Dijet photoproduction at HERA and the structure of the photon.

The ZEUS collaboration
Eur.Phys.J.C 23 (2002) 615-631, 2002.

Abstract (data abstract)
DESY-HERA. Measurement of the di-jet cross section in photoproduction data from collisions of 27.5 GeV positrons with 820 GeV protons. The data were taken during a dedicated run in 1996 and 1997 and have an integrated luminosity of 38.6 +- 0.6 pb-1. The variable X(C=GAMMA), is defined as:& lt;p& gt; X(C=GAMMA)=(ET(JET1)*EXP(-ETARAP(JET1)+ET(JET2)*EXP(-ETARAP(JET2))/2*Y*E_e where Y is the energy fraction of the radiated photon in the proton rest frame and E_e is the positron beamenergy. X(C=GAMMA) is the fractional momentum of the photon carried by the inte racting parton. The jets are defined so that ET(JET1) & gt; ET(JET2). In all the distributions, unless otherwise stated the following kinematical ranges apply:& lt;p& gt; 134 & lt; W_GAMMA-P & lt; 277 GeV& lt;br& gt; ET(JET1) & gt; 14 GeV& lt;br& gt; ET(JET2) & gt; 11 GeV& lt;br& gt; -1 & lt; ETRAP(JET1 and JET2) & lt; 2.4.

  • Table 1

    Data from T 1,F 3

    10.17182/hepdata.46761.v1/t1

    Measured cross section as a function of COS(THETA*), where THETA* is the dijet angle in the parton-parton c.m. frame. The...

  • Table 2

    Data from T 2,F 4

    10.17182/hepdata.46761.v1/t2

    Measured cross section as a function of ET(JET1) for X(C=GAMMA) > 0.75 for:. -1 < ETARAP(JET1) < 0. -1 <...

  • Table 3

    Data from T 2,F 4

    10.17182/hepdata.46761.v1/t3

    Measured cross section as a function of ET(JET1) for X(C=GAMMA) > 0.75 for:. 0 < ETARAP(JET1) < 1. -1 <...

  • Table 4

    Data from T 2,F 4

    10.17182/hepdata.46761.v1/t4

    Measured cross section as a function of ET(JET1) for X(C=GAMMA) > 0.75 for:. 0 < ETARAP(JET1) < 1. 0 <...

  • Table 5

    Data from T 2,F 4

    10.17182/hepdata.46761.v1/t5

    Measured cross section as a function of ET(JET1) for X(C=GAMMA) > 0.75 for:. 1 < ETARAP(JET1) < 2.4. -1 <...

  • Table 6

    Data from T 2,F 4

    10.17182/hepdata.46761.v1/t6

    Measured cross section as a function of ET(JET1) for X(C=GAMMA) > 0.75 for:. 1 < ETARAP(JET1) < 2.4. 0 <...

  • Table 7

    Data from T 2,F 4

    10.17182/hepdata.46761.v1/t7

    Measured cross section as a function of ET(JET1) for X(C=GAMMA) > 0.75 for:. 1 < ETARAP(JET1) < 2.4. 1 <...

  • Table 8

    Data from T 3,F 6

    10.17182/hepdata.46761.v1/t8

    Measured cross section as a function of ET(JET1) for X(C=GAMMA) < 0.75 for:. -1 < ETARAP(JET1) < 0. -1 <...

  • Table 9

    Data from T 3,F 6

    10.17182/hepdata.46761.v1/t9

    Measured cross section as a function of ET(JET1) for X(C=GAMMA) < 0.75 for:. 0 < ETARAP(JET1) < 1. -1 <...

  • Table 10

    Data from T 3,F 6

    10.17182/hepdata.46761.v1/t10

    Measured cross section as a function of ET(JET1) for X(C=GAMMA) < 0.75 for:. 0 < ETARAP(JET1) < 1. 0 <...

  • Table 11

    Data from T 3,F 6

    10.17182/hepdata.46761.v1/t11

    Measured cross section as a function of ET(JET1) for X(C=GAMMA) < 0.75 for:. 1 < ETARAP(JET1) < 2.4. -1 <...

  • Table 12

    Data from T 3,F 6

    10.17182/hepdata.46761.v1/t12

    Measured cross section as a function of ET(JET1) for X(C=GAMMA) < 0.75 for:. 1 < ETARAP(JET1) < 2.4. 0 <...

  • Table 13

    Data from T 3,F 6

    10.17182/hepdata.46761.v1/t13

    Measured cross section as a function of ET(JET1) for X(C=GAMMA) < 0.75 for:. 1 < ETARAP(JET1) < 2.4. 1 <...

  • Table 14

    Data from T 4,F 8

    10.17182/hepdata.46761.v1/t14

    Measured cross section as a function of ETARAP(JET2) for X(C=GAMMA) > 0.75 for:. -1 < ETARAP(JET1) < 0.

  • Table 15

    Data from T 4,F 8

    10.17182/hepdata.46761.v1/t15

    Measured cross section as a function of ETARAP(JET2) for X(C=GAMMA) > 0.75 for:. 0 < ETARAP(JET1) < 1.

  • Table 16

    Data from T 4,F 8

    10.17182/hepdata.46761.v1/t16

    Measured cross section as a function of ETARAP(JET2) for X(C=GAMMA) > 0.75 for:. 1 < ETARAP(JET1) < 2.4.

  • Table 17

    Data from T 5,F 9

    10.17182/hepdata.46761.v1/t17

    Measured cross section as a function of ETARAP(JET2) for X(C=GAMMA) < 0.75 for:. -1 < ETARAP(JET1) < 0.

  • Table 18

    Data from T 5,F 9

    10.17182/hepdata.46761.v1/t18

    Measured cross section as a function of ETARAP(JET2) for X(C=GAMMA) < 0.75 for:. 0 < ETARAP(JET1) < 1.

  • Table 19

    Data from T 5,F 9

    10.17182/hepdata.46761.v1/t19

    Measured cross section as a function of ETARAP(JET2) for X(C=GAMMA) < 0.75 for:. 1 < ETARAP(JET1) < 2.4.

  • Table 20

    Data from T 6,F 10

    10.17182/hepdata.46761.v1/t20

    Measured cross section as a function of X(C=GAMMA) for:. 14 < ET(JET1) < 17 GEV.

  • Table 21

    Data from T 6,F 10

    10.17182/hepdata.46761.v1/t21

    Measured cross section as a function of X(C=GAMMA) for:. 17 < ET(JET1) < 25 GEV.

  • Table 22

    Data from T 6,F 10

    10.17182/hepdata.46761.v1/t22

    No description provided.

  • Table 23

    Data from T 6,F 10

    10.17182/hepdata.46761.v1/t23

    Measured cross section as a function of X(C=GAMMA) for:. 25 < ET(JET1) < 35 GEV.

  • Table 24

    Data from T 6,F 10

    10.17182/hepdata.46761.v1/t24

    Measured cross section as a function of X(C=GAMMA) for:. 35 < ET(JET1) < 90 GEV.

Loading Data...

Ask a Question


Your question will be emailed to those involved with the submission. Please mention the relevant table.


Please log in to HEPData to send a question.