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Measurement of jet fragmentation in Pb+Pb and $pp$ collisions at $\sqrt{s_{NN}} = 5.02$ TeV with the ATLAS detector

The ATLAS collaboration
Phys.Rev.C 98 (2018) 024908, 2018.

Abstract (data abstract)
CERN-LHC. This paper presents a measurement of jet fragmentation functions in 0.49 nb−1 of Pb+Pb collisions and 25 pb−1 of pp collisions at sNN=5.02 TeV collected in 2015 with the ATLAS detector at the LHC. These measurements provide insight into the jet quenching process in the quark-gluon plasma created in the aftermath of ultrarelativistic collisions between two nuclei. The modifications to the jet fragmentation functions are quantified by dividing the measurements in Pb+Pb collisions by baseline measurements in pp collisions. This ratio is studied as a function of the transverse momentum of the jet, the jet rapidity, and the centrality of the collision. In both collision systems, the jet fragmentation functions are measured for jets with transverse momentum between 126 and 398 GeV and with an absolute value of jet rapidity less than 2.1. An enhancement of particles carrying a small fraction of the jet momentum is observed, which increases with centrality and with increasing jet transverse momentum. Yields of particles carrying a very large fraction of the jet momentum are also observed to be enhanced. Between these two enhancements of the fragmentation functions a suppression of particles carrying an intermediate fraction of the jet momentum is observed in Pb+Pb collisions. A small dependence of the modifications on jet rapidity is observed.

  • Table 0

    10.17182/hepdata.91197.v2/t1

    The D(z) distributions in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49 and 0.0...

  • Table 1

    10.17182/hepdata.91197.v2/t2

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49 and 0.0...

  • Table 2

    10.17182/hepdata.91197.v2/t3

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49...

  • Table 3

    10.17182/hepdata.91197.v2/t4

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49...

  • Table 4

    10.17182/hepdata.91197.v2/t5

    The D(z) distributions in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53 and 0.0...

  • Table 5

    10.17182/hepdata.91197.v2/t6

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53 and 0.0...

  • Table 6

    10.17182/hepdata.91197.v2/t7

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53...

  • Table 7

    10.17182/hepdata.91197.v2/t8

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53...

  • Table 8

    10.17182/hepdata.91197.v2/t9

    The D(z) distributions in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19 and 0.0...

  • Table 9

    10.17182/hepdata.91197.v2/t10

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19 and 0.0...

  • Table 10

    10.17182/hepdata.91197.v2/t11

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19...

  • Table 11

    10.17182/hepdata.91197.v2/t12

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19...

  • Table 12

    10.17182/hepdata.91197.v2/t13

    The D(z) distributions in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22 and 0.0...

  • Table 13

    10.17182/hepdata.91197.v2/t14

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22 and 0.0...

  • Table 14

    10.17182/hepdata.91197.v2/t15

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22...

  • Table 15

    10.17182/hepdata.91197.v2/t16

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22...

  • Table 16

    10.17182/hepdata.91197.v2/t17

    The D(z) distributions in different centrality intervals in PbPb and in pp for 316.22 < pTjet < 398.10 and 0.0...

  • Table 17

    10.17182/hepdata.91197.v2/t18

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 316.22 < pTjet < 398.10 and 0.0...

  • Table 18

    10.17182/hepdata.91197.v2/t19

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 316.22 < pTjet < 398.10...

  • Table 19

    10.17182/hepdata.91197.v2/t20

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 316.22 < pTjet < 398.10...

  • Table 20

    10.17182/hepdata.91197.v2/t21

    The D(z) distributions in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49 and 0.0...

  • Table 21

    10.17182/hepdata.91197.v2/t22

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49 and 0.0...

  • Table 22

    10.17182/hepdata.91197.v2/t23

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49...

  • Table 23

    10.17182/hepdata.91197.v2/t24

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49...

  • Table 24

    10.17182/hepdata.91197.v2/t25

    The D(z) distributions in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49 and 0.3...

  • Table 25

    10.17182/hepdata.91197.v2/t26

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49 and 0.3...

  • Table 26

    10.17182/hepdata.91197.v2/t27

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49...

  • Table 27

    10.17182/hepdata.91197.v2/t28

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49...

  • Table 28

    10.17182/hepdata.91197.v2/t29

    The D(z) distributions in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49 and 0.8...

  • Table 29

    10.17182/hepdata.91197.v2/t30

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49 and 0.8...

  • Table 30

    10.17182/hepdata.91197.v2/t31

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49...

  • Table 31

    10.17182/hepdata.91197.v2/t32

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49...

  • Table 32

    10.17182/hepdata.91197.v2/t33

    The D(z) distributions in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49 and 1.2...

  • Table 33

    10.17182/hepdata.91197.v2/t34

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49 and 1.2...

  • Table 34

    10.17182/hepdata.91197.v2/t35

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49...

  • Table 35

    10.17182/hepdata.91197.v2/t36

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 126.00 < pTjet < 158.49...

  • Table 36

    10.17182/hepdata.91197.v2/t37

    The D(z) distributions in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53 and 0.0...

  • Table 37

    10.17182/hepdata.91197.v2/t38

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53 and 0.0...

  • Table 38

    10.17182/hepdata.91197.v2/t39

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53...

  • Table 39

    10.17182/hepdata.91197.v2/t40

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53...

  • Table 40

    10.17182/hepdata.91197.v2/t41

    The D(z) distributions in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53 and 0.3...

  • Table 41

    10.17182/hepdata.91197.v2/t42

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53 and 0.3...

  • Table 42

    10.17182/hepdata.91197.v2/t43

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53...

  • Table 43

    10.17182/hepdata.91197.v2/t44

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53...

  • Table 44

    10.17182/hepdata.91197.v2/t45

    The D(z) distributions in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53 and 0.8...

  • Table 45

    10.17182/hepdata.91197.v2/t46

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53 and 0.8...

  • Table 46

    10.17182/hepdata.91197.v2/t47

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53...

  • Table 47

    10.17182/hepdata.91197.v2/t48

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53...

  • Table 48

    10.17182/hepdata.91197.v2/t49

    The D(z) distributions in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53 and 1.2...

  • Table 49

    10.17182/hepdata.91197.v2/t50

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53 and 1.2...

  • Table 50

    10.17182/hepdata.91197.v2/t51

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53...

  • Table 51

    10.17182/hepdata.91197.v2/t52

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 158.49 < pTjet < 199.53...

  • Table 52

    10.17182/hepdata.91197.v2/t53

    The D(z) distributions in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19 and 0.0...

  • Table 53

    10.17182/hepdata.91197.v2/t54

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19 and 0.0...

  • Table 54

    10.17182/hepdata.91197.v2/t55

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19...

  • Table 55

    10.17182/hepdata.91197.v2/t56

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19...

  • Table 56

    10.17182/hepdata.91197.v2/t57

    The D(z) distributions in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19 and 0.3...

  • Table 57

    10.17182/hepdata.91197.v2/t58

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19 and 0.3...

  • Table 58

    10.17182/hepdata.91197.v2/t59

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19...

  • Table 59

    10.17182/hepdata.91197.v2/t60

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19...

  • Table 60

    10.17182/hepdata.91197.v2/t61

    The D(z) distributions in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19 and 0.8...

  • Table 61

    10.17182/hepdata.91197.v2/t62

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19 and 0.8...

  • Table 62

    10.17182/hepdata.91197.v2/t63

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19...

  • Table 63

    10.17182/hepdata.91197.v2/t64

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19...

  • Table 64

    10.17182/hepdata.91197.v2/t65

    The D(z) distributions in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19 and 1.2...

  • Table 65

    10.17182/hepdata.91197.v2/t66

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19 and 1.2...

  • Table 66

    10.17182/hepdata.91197.v2/t67

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19...

  • Table 67

    10.17182/hepdata.91197.v2/t68

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 199.53 < pTjet < 251.19...

  • Table 68

    10.17182/hepdata.91197.v2/t69

    The D(z) distributions in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22 and 0.0...

  • Table 69

    10.17182/hepdata.91197.v2/t70

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22 and 0.0...

  • Table 70

    10.17182/hepdata.91197.v2/t71

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22...

  • Table 71

    10.17182/hepdata.91197.v2/t72

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22...

  • Table 72

    10.17182/hepdata.91197.v2/t73

    The D(z) distributions in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22 and 0.3...

  • Table 73

    10.17182/hepdata.91197.v2/t74

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22 and 0.3...

  • Table 74

    10.17182/hepdata.91197.v2/t75

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22...

  • Table 75

    10.17182/hepdata.91197.v2/t76

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22...

  • Table 76

    10.17182/hepdata.91197.v2/t77

    The D(z) distributions in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22 and 0.8...

  • Table 77

    10.17182/hepdata.91197.v2/t78

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22 and 0.8...

  • Table 78

    10.17182/hepdata.91197.v2/t79

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22...

  • Table 79

    10.17182/hepdata.91197.v2/t80

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22...

  • Table 80

    10.17182/hepdata.91197.v2/t81

    The D(z) distributions in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22 and 1.2...

  • Table 81

    10.17182/hepdata.91197.v2/t82

    The D(pT) distributions in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22 and 1.2...

  • Table 82

    10.17182/hepdata.91197.v2/t83

    The ratio of the D(z) in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22...

  • Table 83

    10.17182/hepdata.91197.v2/t84

    The ratio of the D(pT) in different centrality intervals in PbPb and in pp for 251.19 < pTjet < 316.22...

  • Table 84

    10.17182/hepdata.91197.v2/t85

    Excess transverse momenta in jet in PbPb compared to pp collisions in different centrality selections for abs(jet rapidity) < 2.1.

  • Table 85

    10.17182/hepdata.91197.v2/t86

    Excess particles in jet in PbPb compared to pp collisions in different centrality selections for abs(jet rapidity) < 2.1.

  • Table 86

    10.17182/hepdata.91197.v2/t87

    Ratio of R(D(z)) distributions in a given abs(jet rapidity) region to R(D(z)) for abs(jet rapidity) < 0.3 for 126 <...

  • Table 87

    10.17182/hepdata.91197.v2/t88

    Ratio of R(D(z)) distributions in a given abs(jet rapidity) region to R(D(z)) for abs(jet rapidity) < 0.3 for 158.5 <...

  • Table 88

    10.17182/hepdata.91197.v2/t89

    Ratio of R(D(z)) distributions in a given abs(jet rapidity) region to R(D(z)) for abs(jet rapidity) < 0.3 for 199.5 <...

Version 2 modifications: This version correctly has the bins that are in the published paper. For kinematic selections which were available in Version 1 there is no change in the values.

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