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Collins asymmetries in inclusive charged $KK$ and $K\pi$ pairs produced in $e^+e^-$ annihilation

The BaBar collaboration
Phys.Rev. D92 (2015) 111101, 2015.

Abstract (data abstract)
SLAC-PEP2. We present measurements of Collins asymmetries in the inclusive process $e^+e^- \rightarrow h_1 h_2 X$, $h_1h_2=KK,\, K\pi,\, \pi\pi$, at the center-of-mass energy of 10.6 GeV, using a data sample of 468 fb$^{-1}$ collected by the BaBar experiment at the PEP-II $B$ factory at SLAC National Accelerator Center. Considering hadrons in opposite thrust hemispheres of hadronic events, we observe clear azimuthal asymmetries in the ratio of unlike- to like-sign, and unlike- to all charged $h_1 h_2$ pairs, which increase with hadron energies. The $K\pi$ asymmetries are similar to those measured for the $\pi\pi$ pairs, whereas those measured for high-energy $KK$ pairs are, in general, larger.

  • Table 1

    Data from Table 1

    10.17182/hepdata.73750.v1/t1

    Light quark ($uds$) Collins asymmetries obtained by fitting the U/L and U/C double ratios as a function of ($z_1$,$z_2$) for...

  • Table 2

    Data from Table 1

    10.17182/hepdata.73750.v1/t2

    Light quark ($uds$) Collins asymmetries obtained by fitting the U/L and U/C double ratios as a function of ($z_1$,$z_2$) for...

  • Table 3

    Data from Table 2

    10.17182/hepdata.73750.v1/t3

    Light quark ($uds$) Collins asymmetries obtained by fitting the U/L and U/C double ratios as a function of ($z_1$,$z_2$) for...

  • Table 4

    Data from Table 2

    10.17182/hepdata.73750.v1/t4

    Light quark ($uds$) Collins asymmetries obtained by fitting the U/L and U/C double ratios as a function of ($z_1$,$z_2$) for...

  • Table 5

    Data from Table 3

    10.17182/hepdata.73750.v1/t5

    Light quark ($uds$) Collins asymmetries obtained by fitting the U/L and U/C double ratios as a function of ($z_1$,$z_2$) for...

  • Table 6

    Data from Table 3

    10.17182/hepdata.73750.v1/t6

    Light quark ($uds$) Collins asymmetries obtained by fitting the U/L and U/C double ratios as a function of ($z_1$,$z_2$) for...

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