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Measurement of $K^0_{S}$, $\Lambda$, $\bar{\Lambda}$ production at HERA

The ZEUS collaboration
Eur.Phys.J. C51 (2007) 1-23, 2007

Abstract (data abstract)
DESY-HERA. Measurement of the production of the neutral strange hadrons K0S, LAMBDA and LAMBDABAR in electron/positron collisions with protons at centre-of-mass energies 300 and 318 GeV. Cross sections, baryon-to-meson ratios and relative yields of strange and charged light hadrons plus LAMBDA/LAMBDABAR asymmetries and polarizations are presented. The data cover the DIS region in two Q**2 regions (5 to 25 GeV**2 and & gt; 25 GeV**2) and photoproduction for Q**2 & lt; 1 GeV**2. The data were collected during the HERA running period 1996 to 2000 with a total luminosity of 121 pb-1 of which 82 (39) pb-1 are from electron/position beams of energy 27.5 GeV colliding with protons of energy 920/820 GeV. The data require the presence of two hadronic jets for photoproduction events only, each with at least 5 GeV transverse energy.. Numerical values supplied by Chuanlei Liu.

  • Table 1

    Data from F 3(a)

    10.17182/hepdata.45796.v1/t1

    Differential K0S cross section in DIS events as a function of transverse momentum (lab). for Q**2 from 5 to 25...

  • Table 2

    Data from F 3(b)

    10.17182/hepdata.45796.v1/t2

    Differential K0S cross section in DIS events as a function of transverse momentum (lab). for Q**2 > 25 GeV**2.

  • Table 3

    Data from F 3(c)

    10.17182/hepdata.45796.v1/t3

    Differential K0S cross section in DIS events as a function of pseudorapidity (lab). for Q**2 from 5 to 25 GeV**2.

  • Table 4

    Data from F 3(d)

    10.17182/hepdata.45796.v1/t4

    Differential K0S cross section in DIS events as a function of pseudorapidity (lab). for Q**2 > 25 GeV**2.

  • Table 5

    Data from F 4(a)

    10.17182/hepdata.45796.v1/t5

    Differential K0S cross section in DIS events as a function of Bjorken X. for Q**2 from 5 to 25 GeV**2.

  • Table 6

    Data from F 4(b)

    10.17182/hepdata.45796.v1/t6

    Differential K0S cross section in DIS events as a function of Bjorken X. for Q**2 > 25 GeV**2.

  • Table 7

    Data from F 4(c)

    10.17182/hepdata.45796.v1/t7

    Differential K0S cross section in DIS events as a function of Q**2. for Q**2 > 5 GeV**2.

  • Table 8

    Data from F 5(a)

    10.17182/hepdata.45796.v1/t8

    Differential LAMBDA/LAMBDABAR cross section in DIS events as a function of transverse momentum (lab). for Q**2 from 5 to 25...

  • Table 9

    Data from F 5(b)

    10.17182/hepdata.45796.v1/t9

    Differential LAMBDA/LAMBDABAR cross section in DIS events as a function of transverse momentum (lab). for Q**2 > 25 GeV**2.

  • Table 10

    Data from F 5(c)

    10.17182/hepdata.45796.v1/t10

    Differential LAMBDA/LAMBDABAR cross section in DIS events as a function of pseudorapidity (lab). for Q**2 from 5 to 25 GeV**2.

  • Table 11

    Data from F 5(d)

    10.17182/hepdata.45796.v1/t11

    Differential LAMBDA/LAMBDABAR cross section in DIS events as a function of pseudorapidity (lab). for Q**2 > 25 GeV**2.

  • Table 12

    Data from F 6(a)

    10.17182/hepdata.45796.v1/t12

    Differential LAMBDA/LAMBDABAR cross section in DIS eventsas a function of Bjorken X. for Q**2 from 5 to 25 GeV**2.

  • Table 13

    Data from F 6(b)

    10.17182/hepdata.45796.v1/t13

    Differential LAMBDA/LAMBDABAR cross section in DIS eventsas a function of Bjorken X. for Q**2 > 25 GeV**2.

  • Table 14

    Data from F 6(c)

    10.17182/hepdata.45796.v1/t14

    Differential LAMBDA/LAMBDABAR cross section in DIS events as a function of Q**2. for Q**2 > 5 GeV**2.

  • Table 15

    Data from F 7(a)

    10.17182/hepdata.45796.v1/t15

    Differential K0S cross section in photoproduction events as a function of transverse momentum (lab).

  • Table 16

    Data from F 7(b)

    10.17182/hepdata.45796.v1/t16

    Differential K0S cross section in photoproduction events as a function of pseudorapidity (lab).

  • Table 17

    Data from F 7(c)

    10.17182/hepdata.45796.v1/t17

    Differential K0S cross section in photoproduction events as a function of XOBS(C=GAMMA).

  • Table 18

    Data from F 8(a)

    10.17182/hepdata.45796.v1/t18

    Differential LAMBDA/LAMBDABAR cross section in photoproduction events as a function of transverse momentum (lab).

  • Table 19

    Data from F 8(b)

    10.17182/hepdata.45796.v1/t19

    Differential LAMBDA/LAMBDABAR cross section in photoproduction events as a function of pseudorapidity (lab).

  • Table 20

    Data from F 8(c)

    10.17182/hepdata.45796.v1/t20

    Differential LAMBDA/LAMBDABAR cross section in photoproduction events as a function of XOBS(C=GAMMA).

  • Table 21

    Data from F 9(a)

    10.17182/hepdata.45796.v1/t21

    Asymmetry in LAMBDA/LAMBDABAR production in DIS events as a function of transverse momentum (lab). for Q**2 > 25 GeV**2.

  • Table 22

    Data from F 9(b)

    10.17182/hepdata.45796.v1/t22

    Asymmetry in LAMBDA/LAMBDABAR production in DIS events as a function of pseudorapidity (lab). for Q**2 > 25 GeV**2.

  • Table 23

    Data from F 9(c)

    10.17182/hepdata.45796.v1/t23

    Asymmetry in LAMBDA/LAMBDABAR production in DIS events as a function of Bjorken X. for Q**2 > 25 GeV**2.

  • Table 24

    Data from F 9(d)

    10.17182/hepdata.45796.v1/t24

    Asymmetry in LAMBDA/LAMBDABAR production in DIS events as a function of Q**2. for Q**2 > 25 GeV**2.

  • Table 25

    Data from F 10(a)

    10.17182/hepdata.45796.v1/t25

    Asymmetry in LAMBDA/LAMBDABAR production in photoproduction events as a function of transverse momentum (lab).

  • Table 26

    Data from F 10(b)

    10.17182/hepdata.45796.v1/t26

    Asymmetry in LAMBDA/LAMBDABAR production in photoproduction events as a function of pseudorapidity (lab).

  • Table 27

    Data from F 10(c)

    10.17182/hepdata.45796.v1/t27

    Asymmetry in LAMBDA/LAMBDABAR production in photoproduction events as a function of XOBS(C=GAMMA).

  • Table 28

    Data from F 11(a)

    10.17182/hepdata.45796.v1/t28

    LAMBDA/K0S production ratio in DIS events as a function of transverse momentum (lab). for Q**2 from 5 to 25 GeV**2.

  • Table 29

    Data from F 11(b)

    10.17182/hepdata.45796.v1/t29

    LAMBDA/K0S production ratio in DIS events as a function of transverse momentum (lab). for Q**2 > 25 GeV**2.

  • Table 30

    Data from F 11(c)

    10.17182/hepdata.45796.v1/t30

    LAMBDA/K0S production ratio in DIS events as a function of pseudorapidity (lab). for Q**2 from 5 to 25 GeV**2.

  • Table 31

    Data from F 11(d)

    10.17182/hepdata.45796.v1/t31

    LAMBDA/K0S production ratio in DIS events as a function of pseudorapidity (lab). for Q**2 > 25 GeV**2.

  • Table 32

    Data from F 12(a)

    10.17182/hepdata.45796.v1/t32

    LAMBDA/K0S production ratio in DIS events as a function of Bjorken X. for Q**2 from 5 to 25 GeV**2.

  • Table 33

    Data from F 12(b)

    10.17182/hepdata.45796.v1/t33

    LAMBDA/K0S production ratio in DIS events as a function of Bjorken X. for Q**2 > 25 GeV**2.

  • Table 34

    Data from F 12(c)

    10.17182/hepdata.45796.v1/t34

    LAMBDA/K0S production ratio in DIS events as a function of Q**2. for Q**2 > 5 GeV**2.

  • Table 35

    Data from F 13(a)

    10.17182/hepdata.45796.v1/t35

    LAMBDA/K0S production ratio in DIS events as a function of Q**2. for Bjorken X from 2.0E-5 to 3.0E-4.

  • Table 36

    Data from F 13(b)

    10.17182/hepdata.45796.v1/t36

    LAMBDA/K0S production ratio in DIS events as a function of Q**2. for Bjorken X from 3.0E-4 to 6.0E-4.

  • Table 37

    Data from F 13(c)

    10.17182/hepdata.45796.v1/t37

    LAMBDA/K0S production ratio in DIS events as a function of Q**2. for Bjorken X from 6.0E-4 to 1.4E-3.

  • Table 38

    Data from F 13(d)

    10.17182/hepdata.45796.v1/t38

    LAMBDA/K0S production ratio in DIS events as a function of Q**2. for Bjorken X from 1.4E-3 to 2.0E-2.

  • Table 39

    Data from F 14(a)

    10.17182/hepdata.45796.v1/t39

    LAMBDA/K0S production ratio in DIS events as a function of Bjorken X. for Q**2 from 5.0 to 9.5 GeV**2.

  • Table 40

    Data from F 14(b)

    10.17182/hepdata.45796.v1/t40

    LAMBDA/K0S production ratio in DIS events as a function of Bjorken X. for Q**2 from 9.5 to 25.0 GeV**2.

  • Table 41

    Data from F 14(c)

    10.17182/hepdata.45796.v1/t41

    LAMBDA/K0S production ratio in DIS events as a function of Bjorken X. for Q**2 from 25 to 100 GeV**2.

  • Table 42

    Data from F 14(d)

    10.17182/hepdata.45796.v1/t42

    LAMBDA/K0S production ratio in DIS events as a function of Bjorken X. for Q**2 from 100 to 500 GeV**2.

  • Table 43

    Data from F 15(a)

    10.17182/hepdata.45796.v1/t43

    LAMBDA/K0S production ratio in photoproduction events as a function of transverse momentum (lab).

  • Table 44

    Data from F 15(b)

    10.17182/hepdata.45796.v1/t44

    LAMBDA/K0S production ratio in photoproduction events as a function of pseudorapidity (lab).

  • Table 45

    Data from F 15(c)

    10.17182/hepdata.45796.v1/t45

    LAMBDA/K0S production ratio in photoproduction events as a function of XOBS(C=GAMMA).

  • Table 46

    Data from F 17(a1)

    10.17182/hepdata.45796.v1/t46

    LAMBDA/K0S production ratio in photoproduction events as a function of transverse momentum (lab). for data from the fireball-enriched sample where...

  • Table 47

    Data from F 17(a2)

    10.17182/hepdata.45796.v1/t47

    LAMBDA/K0S production ratio in photoproduction events as a function of transverse momentum (lab). for data from the fireball-depleted sample where...

  • Table 48

    Data from F 17(b1)

    10.17182/hepdata.45796.v1/t48

    LAMBDA/K0S production ratio in photoproduction events as a function of pseudorapidity (lab). for data from the fireball-enriched sample where the...

  • Table 49

    Data from F 17(b2)

    10.17182/hepdata.45796.v1/t49

    LAMBDA/K0S production ratio in photoproduction events as a function of pseudorapidity (lab). for data from the fireball-depleted sample where the...

  • Table 50

    Data from F 17(c1)

    10.17182/hepdata.45796.v1/t50

    LAMBDA/K0S production ratio in photoproduction events as a function of XOBS(C=GAMMA). for data from the fireball-enriched sample where the highest...

  • Table 51

    Data from F 17(c2)

    10.17182/hepdata.45796.v1/t51

    LAMBDA/K0S production ratio in photoproduction events as a function of XOBS(C=GAMMA). for data from the fireball-depleted sample where the highest...

  • Table 52

    Data from F 18(a)

    10.17182/hepdata.45796.v1/t52

    K0S/Charged particle production ratio in DIS events as a function of transverse momentum (lab). for Q**2 > 25 GeV**2.

  • Table 53

    Data from F 18(b)

    10.17182/hepdata.45796.v1/t53

    K0S/Charged particle production ratio in DIS events as a function of pseudorapidity (lab). for Q**2 > 25 GeV**2.

  • Table 54

    Data from F 19(a)

    10.17182/hepdata.45796.v1/t54

    K0S/Charged particle production ratio in photoproduction events as a function of transverse momentum (lab).

  • Table 55

    Data from F 19(b)

    10.17182/hepdata.45796.v1/t55

    K0S/Charged particle production ratio in photoproduction events as a function of pseudorapidity (lab).

  • Table 56

    Data from F 19(c1)

    10.17182/hepdata.45796.v1/t56

    K0S/Charged particle production ratio in photoproduction events as a function of transverse momentum (lab). for data from the fireball-enriched sample...

  • Table 57

    Data from F 19(c2)

    10.17182/hepdata.45796.v1/t57

    K0S/Charged particle production ratio in photoproduction events as a function of transverse momentum (lab). for data from the fireball-depleted sample...

  • Table 58

    Data from F 19(d1)

    10.17182/hepdata.45796.v1/t58

    K0S/Charged particle production ratio in photoproduction events as a function of pseudorapidity (lab). for data from the fireball-enriched sample where...

  • Table 59

    Data from F 19(d2)

    10.17182/hepdata.45796.v1/t59

    K0S/Charged particle production ratio in photoproduction events as a function of pseudorapidity (lab). for data from the fireball-depleted sample where...

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