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Measurement of the Prompt $J/\psi$ and $\psi$(2S) Polarizations in $pp$ Collisions at $\sqrt{s}$ = 7 TeV

The CMS collaboration Chatrchyan, Serguei ; Khachatryan, Vardan ; Sirunyan, Albert M ; et al.

Phys.Lett.B 727 (2013) 381-402, 2013.

https://inspirehep.net/literature/1244128 Inspire Record 1244128 DOI 10.17182/hepdata.63898 https://doi.org/10.17182/hepdata.63898

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 by the CMS experiment at the LHC, corresponding to an integrated luminosity of 4.9 inverse femtobarns. The prompt J/psi and psi(2S) polarization parameters lambda[theta], lambda[phi], and lambda[theta,phi], as well as the frame-invariant quantity 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 abs(y) < 0.6 and 0.6 < abs(y) < 1.2. The corresponding psi(2S) results cover 14 < pt < 50 GeV and include a third rapidity bin, 1.2 < abs(y) < 1.5. No evidence of large transverse or longitudinal polarizations is seen in these kinematic regions, which extend much beyond those previously explored.

60 data tables

Table 1

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

Table 2

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

Table 3

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

Table 4

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

Table 5

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

Table 6

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

Table 7

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

Table 8

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

Table 9

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

Table 10

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

Table 11

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

Table 12

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

Table 13

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

Table 14

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

Table 15

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

Table 16

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

Table 17

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

Table 18

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

Table 19

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

Table 20

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

Table 21

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

Table 22

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

Table 23

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

Table 24

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

Table 25

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

Table 26

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

Table 27

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

Table 28

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

Table 29

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

Table 30

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

Table 31

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

Table 32

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

Table 33

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

Table 34

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

Table 35

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

Table 36

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

Table 37

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

Table 38

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

Table 39

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

Table 40

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

Table 41

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

Table 42

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

Table 43

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

Table 44

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

Table 45

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

Table 46

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

Table 47

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

Table 48

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

Table 49

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

Table 50

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

Table 51

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

Table 52

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

Table 53

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

Table 54

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

Table 55

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

Table 56

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

Table 57

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

Table 58

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

Table 59

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

Table 60

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

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