• Browse all
Measurement of the prompt $J/\psi$ and $\psi$(2S) polarizations in $pp$ collisions at $\sqrt{s}$ = 7 TeV

The collaboration
Phys.Lett. B727 (2013) 381-402, 2013

Abstract (data abstract)
CERN-LHC. The polarizations of prompt J/psi and psi(2S) mesons are measured in proton-proton collisions at sqrt(s) = 7 TeV, using a dimuon data sample collected in 2011 by the CMS experiment at the LHC, corresponding to an integrated luminosity of 4.9 fb^-1. The prompt J/psi and psi(2S) polarization parameters Lambda-Theta, Lambda-Phi, Lambda-Theta-Phi, as well as the frame-invariant Lambda-Tilde, are measured from the dimuon decay angular distributions in three different polarization frames. The J/psi results are obtained in the transverse momentum range 14 < pT < 70 GeV, in the rapidity intervals |y| < 0.6 and 0.6 < |y| < 1.2. The corresponding psi(2S) results cover 14 < pT < 50 GeV and include a third rapidity bin, 1.2 < |y| < 1.5. No evidence of large polarizations is seen in these kinematic regions, which extend much beyond those previously explored. The tables below list the results of the angular anisotropy parameters Lambda-Theta, Lambda-Phi, Lambda-Theta-Phi and the frame-invariant parameter Lambda-Tilde, for the J/psi and psi(2S) states in the Collins-Soper (CS), helicity (HX), and perpendicular helicity (PX) frames, along with their total uncertainties (68.3%, 95.5%, and 99.7% CL) and statistical uncertainties only (68.3% CL) for different bins of J/psi or psi(2S) transverse momentum pT and absolute rapidity |y|.

• #### Table 1

Data from Table 2

10.17182/hepdata.63898.v1/t1

Lambda-Theta in the CS frame for the J/psi as a function of pT for 0.0 < |y| < 0.6.

• #### Table 2

Data from Table 2

10.17182/hepdata.63898.v1/t2

Lambda-Theta in the CS frame for the J/psi as a function of pT for 0.6 < |y| < 1.2.

• #### Table 3

Data from Table 3

10.17182/hepdata.63898.v1/t3

Lambda-Phi in the CS frame for the J/psi as a function of pT for 0.0 < |y| < 0.6.

• #### Table 4

Data from Table 3

10.17182/hepdata.63898.v1/t4

Lambda-Phi in the CS frame for the J/psi as a function of pT for 0.6 < |y| < 1.2.

• #### Table 5

Data from Table 4

10.17182/hepdata.63898.v1/t5

Lambda-Theta-Phi in the CS frame for the J/psi as a function of pT for 0.0 < |y| < 0.6.

• #### Table 6

Data from Table 4

10.17182/hepdata.63898.v1/t6

Lambda-Theta-Phi in the CS frame for the J/psi as a function of pT for 0.6 < |y| < 1.2.

• #### Table 7

Data from Table 5

10.17182/hepdata.63898.v1/t7

Lambda-Tilde in the CS frame for the J/psi as a function of pT for 0.0 < |y| < 0.6.

• #### Table 8

Data from Table 5

10.17182/hepdata.63898.v1/t8

Lambda-Tilde in the CS frame for the J/psi as a function of pT for 0.6 < |y| < 1.2.

• #### Table 9

Data from Table 6

10.17182/hepdata.63898.v1/t9

Lambda-Theta in the HX frame for the J/psi as a function of pT for 0.0 < |y| < 0.6.

• #### Table 10

Data from Table 6

10.17182/hepdata.63898.v1/t10

Lambda-Theta in the HX frame for the J/psi as a function of pT for 0.6 < |y| < 1.2.

• #### Table 11

Data from Table 7

10.17182/hepdata.63898.v1/t11

Lambda-Phi in the HX frame for the J/psi as a function of pT for 0.0 < |y| < 0.6.

• #### Table 12

Data from Table 7

10.17182/hepdata.63898.v1/t12

Lambda-Phi in the HX frame for the J/psi as a function of pT for 0.6 < |y| < 1.2.

• #### Table 13

Data from Table 8

10.17182/hepdata.63898.v1/t13

Lambda-Theta-Phi in the HX frame for the J/psi as a function of pT for 0.0 < |y| < 0.6.

• #### Table 14

Data from Table 8

10.17182/hepdata.63898.v1/t14

Lambda-Theta-Phi in the HX frame for the J/psi as a function of pT for 0.6 < |y| < 1.2.

• #### Table 15

Data from Table 9

10.17182/hepdata.63898.v1/t15

Lambda-Tilde in the HX frame for the J/psi as a function of pT for 0.0 < |y| < 0.6.

• #### Table 16

Data from Table 9

10.17182/hepdata.63898.v1/t16

Lambda-Tilde in the HX frame for the J/psi as a function of pT for 0.6 < |y| < 1.2.

• #### Table 17

Data from Table 10

10.17182/hepdata.63898.v1/t17

Lambda-Theta in the PX frame for the J/psi as a function of pT for 0.0 < |y| < 0.6.

• #### Table 18

Data from Table 10

10.17182/hepdata.63898.v1/t18

Lambda-Theta in the PX frame for the J/psi as a function of pT for 0.6 < |y| < 1.2.

• #### Table 19

Data from Table 11

10.17182/hepdata.63898.v1/t19

Lambda-Phi in the PX frame for the J/psi as a function of pT for 0.0 < |y| < 0.6.

• #### Table 20

Data from Table 11

10.17182/hepdata.63898.v1/t20

Lambda-Phi in the PX frame for the J/psi as a function of pT for 0.6 < |y| < 1.2.

• #### Table 21

Data from Table 12

10.17182/hepdata.63898.v1/t21

Lambda-Theta-Phi in the PX frame for the J/psi as a function of pT for 0.0 < |y| < 0.6.

• #### Table 22

Data from Table 12

10.17182/hepdata.63898.v1/t22

Lambda-Theta-Phi in the PX frame for the J/psi as a function of pT for 0.6 < |y| < 1.2.

• #### Table 23

Data from Table 13

10.17182/hepdata.63898.v1/t23

Lambda-Tilde in the PX frame for the J/psi as a function of pT for 0.0 < |y| < 0.6.

• #### Table 24

Data from Table 13

10.17182/hepdata.63898.v1/t24

Lambda-Tilde in the PX frame for the J/psi as a function of pT for 0.6 < |y| < 1.2.

• #### Table 25

Data from Table 14

10.17182/hepdata.63898.v1/t25

Lambda-Theta in the CS frame for the psi(2S) as a function of pT for 0.0 < |y| < 0.6.

• #### Table 26

Data from Table 14

10.17182/hepdata.63898.v1/t26

Lambda-Theta in the CS frame for the psi(2S) as a function of pT for 0.6 < |y| < 1.2.

• #### Table 27

Data from Table 14

10.17182/hepdata.63898.v1/t27

Lambda-Theta in the CS frame for the psi(2S) as a function of pT for 1.2 < |y| < 1.5.

• #### Table 28

Data from Table 15

10.17182/hepdata.63898.v1/t28

Lambda-Phi in the CS frame for the psi(2S) as a function of pT for 0.0 < |y| < 0.6.

• #### Table 29

Data from Table 15

10.17182/hepdata.63898.v1/t29

Lambda-Phi in the CS frame for the psi(2S) as a function of pT for 0.6 < |y| < 1.2.

• #### Table 30

Data from Table 15

10.17182/hepdata.63898.v1/t30

Lambda-Phi in the CS frame for the psi(2S) as a function of pT for 1.2 < |y| < 1.5.

• #### Table 31

Data from Table 16

10.17182/hepdata.63898.v1/t31

Lambda-Theta-Phi in the CS frame for the psi(2S) as a function of pT for 0.0 < |y| < 0.6.

• #### Table 32

Data from Table 16

10.17182/hepdata.63898.v1/t32

Lambda-Theta-Phi in the CS frame for the psi(2S) as a function of pT for 0.6 < |y| < 1.2.

• #### Table 33

Data from Table 16

10.17182/hepdata.63898.v1/t33

Lambda-Theta-Phi in the CS frame for the psi(2S) as a function of pT for 1.2 < |y| < 1.5.

• #### Table 34

Data from Table 17

10.17182/hepdata.63898.v1/t34

Lambda-Tilde in the CS frame for the psi(2S) as a function of pT for 0.0 < |y| < 0.6.

• #### Table 35

Data from Table 17

10.17182/hepdata.63898.v1/t35

Lambda-Tilde in the CS frame for the psi(2S) as a function of pT for 0.6 < |y| < 1.2.

• #### Table 36

Data from Table 17

10.17182/hepdata.63898.v1/t36

Lambda-Tilde in the CS frame for the psi(2S) as a function of pT for 1.2 < |y| < 1.5.

• #### Table 37

Data from Table 18

10.17182/hepdata.63898.v1/t37

Lambda-Theta in the HX frame for the psi(2S) as a function of pT for 0.0 < |y| < 0.6.

• #### Table 38

Data from Table 18

10.17182/hepdata.63898.v1/t38

Lambda-Theta in the HX frame for the psi(2S) as a function of pT for 0.6 < |y| < 1.2.

• #### Table 39

Data from Table 18

10.17182/hepdata.63898.v1/t39

Lambda-Theta in the HX frame for the psi(2S) as a function of pT for 1.2 < |y| < 1.5.

• #### Table 40

Data from Table 19

10.17182/hepdata.63898.v1/t40

Lambda-Phi in the HX frame for the psi(2S) as a function of pT for 0.0 < |y| < 0.6.

• #### Table 41

Data from Table 19

10.17182/hepdata.63898.v1/t41

Lambda-Phi in the HX frame for the psi(2S) as a function of pT for 0.6 < |y| < 1.2.

• #### Table 42

Data from Table 19

10.17182/hepdata.63898.v1/t42

Lambda-Phi in the HX frame for the psi(2S) as a function of pT for 1.2 < |y| < 1.5.

• #### Table 43

Data from Table 20

10.17182/hepdata.63898.v1/t43

Lambda-Theta-Phi in the HX frame for the psi(2S) as a function of pT for 0.0 < |y| < 0.6.

• #### Table 44

Data from Table 20

10.17182/hepdata.63898.v1/t44

Lambda-Theta-Phi in the HX frame for the psi(2S) as a function of pT for 0.6 < |y| < 1.2.

• #### Table 45

Data from Table 20

10.17182/hepdata.63898.v1/t45

Lambda-Theta-Phi in the HX frame for the psi(2S) as a function of pT for 1.2 < |y| < 1.5.

• #### Table 46

Data from Table 21

10.17182/hepdata.63898.v1/t46

Lambda-Tilde in the HX frame for the psi(2S) as a function of pT for 0.0 < |y| < 0.6.

• #### Table 47

Data from Table 21

10.17182/hepdata.63898.v1/t47

Lambda-Tilde in the HX frame for the psi(2S) as a function of pT for 0.6 < |y| < 1.2.

• #### Table 48

Data from Table 21

10.17182/hepdata.63898.v1/t48

Lambda-Tilde in the HX frame for the psi(2S) as a function of pT for 1.2 < |y| < 1.5.

• #### Table 49

Data from Table 22

10.17182/hepdata.63898.v1/t49

Lambda-Theta in the PX frame for the psi(2S) as a function of pT for 0.0 < |y| < 0.6.

• #### Table 50

Data from Table 22

10.17182/hepdata.63898.v1/t50

Lambda-Theta in the PX frame for the psi(2S) as a function of pT for 0.6 < |y| < 1.2.

• #### Table 51

Data from Table 22

10.17182/hepdata.63898.v1/t51

Lambda-Theta in the PX frame for the psi(2S) as a function of pT for 1.2 < |y| < 1.5.

• #### Table 52

Data from Table 23

10.17182/hepdata.63898.v1/t52

Lambda-Phi in the PX frame for the psi(2S) as a function of pT for 0.0 < |y| < 0.6.

• #### Table 53

Data from Table 23

10.17182/hepdata.63898.v1/t53

Lambda-Phi in the PX frame for the psi(2S) as a function of pT for 0.6 < |y| < 1.2.

• #### Table 54

Data from Table 23

10.17182/hepdata.63898.v1/t54

Lambda-Phi in the PX frame for the psi(2S) as a function of pT for 1.2 < |y| < 1.5.

• #### Table 55

Data from Table 24

10.17182/hepdata.63898.v1/t55

Lambda-Theta-Phi in the PX frame for the psi(2S) as a function of pT for 0.0 < |y| < 0.6.

• #### Table 56

Data from Table 24

10.17182/hepdata.63898.v1/t56

Lambda-Theta-Phi in the PX frame for the psi(2S) as a function of pT for 0.6 < |y| < 1.2.

• #### Table 57

Data from Table 24

10.17182/hepdata.63898.v1/t57

Lambda-Theta-Phi in the PX frame for the psi(2S) as a function of pT for 1.2 < |y| < 1.5.

• #### Table 58

Data from Table 25

10.17182/hepdata.63898.v1/t58

Lambda-Tilde in the PX frame for the psi(2S) as a function of pT for 0.0 < |y| < 0.6.

• #### Table 59

Data from Table 25

10.17182/hepdata.63898.v1/t59

Lambda-Tilde in the PX frame for the psi(2S) as a function of pT for 0.6 < |y| < 1.2.

• #### Table 60

Data from Table 25

10.17182/hepdata.63898.v1/t60

Lambda-Tilde in the PX frame for the psi(2S) as a function of pT for 1.2 < |y| < 1.5.