Table 3.
Measured J/ψ polarization parameters in bins of p T and y in Collins–Soper frame. The first uncertainty is statistical (from the fit and the background subtraction) while the second is the systematic uncertainty
| p T (GeV/c) | λ | 2.0<y<2.5 | 2.5<y<3.0 | 3.0<y<3.5 | 3.5<y<4.0 | 4.0<y<4.5 |
|---|---|---|---|---|---|---|
| 2–3 | λ θ | −0.305±0.118±0.338 | −0.176±0.009±0.108 | −0.130±0.004±0.058 | −0.051±0.005±0.067 | −0.043±0.011±0.085 |
| λ θϕ | 0.152±0.044±0.158 | 0.114±0.006±0.058 | 0.102±0.004±0.035 | 0.098±0.003±0.036 | 0.037±0.005±0.050 | |
| λ ϕ | −0.031±0.011±0.125 | 0.014±0.003±0.059 | 0.008±0.002±0.038 | −0.001±0.002±0.031 | −0.005±0.003±0.036 | |
| 3–4 | λ θ | −0.180±0.086±0.215 | −0.076±0.007±0.067 | −0.064±0.004±0.034 | 0.017±0.005±0.042 | −0.001±0.011±0.070 |
| λ θϕ | 0.223±0.042±0.095 | 0.090±0.006±0.047 | 0.109±0.004±0.031 | 0.081±0.004±0.032 | 0.015±0.006±0.049 | |
| λ ϕ | −0.070±0.014±0.065 | −0.027±0.004±0.036 | −0.033±0.003±0.028 | −0.017±0.004±0.026 | −0.049±0.005±0.040 | |
| 4–5 | λ θ | −0.084±0.068±0.171 | −0.000±0.007±0.040 | −0.035±0.005±0.030 | 0.031±0.006±0.037 | 0.051±0.012±0.071 |
| λ θϕ | 0.240±0.041±0.092 | 0.067±0.006±0.041 | 0.081±0.004±0.027 | 0.065±0.004±0.030 | −0.028±0.008±0.052 | |
| λ ϕ | −0.104±0.017±0.055 | −0.042±0.005±0.032 | −0.050±0.005±0.027 | −0.033±0.005±0.029 | −0.095±0.007±0.047 | |
| 5–7 | λ θ | −0.110±0.037±0.081 | 0.008±0.006±0.032 | 0.005±0.005±0.027 | 0.054±0.006±0.033 | 0.089±0.012±0.072 |
| λ θϕ | 0.160±0.029±0.070 | 0.056±0.005±0.032 | 0.041±0.004±0.023 | 0.063±0.004±0.028 | −0.000±0.008±0.053 | |
| λ ϕ | −0.068±0.014±0.051 | −0.056±0.005±0.031 | −0.085±0.005±0.026 | −0.051±0.005±0.031 | −0.056±0.008±0.052 | |
| 7–10 | λ θ | 0.079±0.032±0.061 | 0.035±0.009±0.035 | 0.032±0.009±0.030 | 0.031±0.011±0.036 | 0.072±0.020±0.071 |
| λ θϕ | 0.014±0.028±0.061 | 0.073±0.006±0.026 | 0.036±0.005±0.023 | 0.022±0.007±0.029 | 0.007±0.013±0.045 | |
| λ ϕ | −0.074±0.018±0.053 | −0.078±0.007±0.032 | −0.076±0.007±0.029 | −0.027±0.009±0.036 | −0.022±0.014±0.055 | |
| 10–15 | λ θ | 0.064±0.037±0.076 | 0.099±0.016±0.046 | −0.004±0.018±0.044 | −0.009±0.024±0.050 | 0.019±0.042±0.086 |
| λ θϕ | 0.105±0.033±0.057 | 0.070±0.010±0.024 | 0.004±0.010±0.024 | 0.021±0.014±0.028 | 0.033±0.026±0.041 | |
| λ ϕ | −0.093±0.026±0.059 | −0.108±0.013±0.040 | −0.024±0.013±0.040 | −0.024±0.017±0.048 | −0.084±0.030±0.064 |