论文标题
$λ$的横向自旋转移和$ \overlineλ$ hyperons in两极分化$ p $+$ p $ collisions $ \ sqrt {s} = 200 $ gev at rhic-star
Transverse Spin Transfer of $Λ$ and $\overlineΛ$ Hyperons in Polarized $p$+$p$ Collisions at $\sqrt{s} = 200$ GeV at RHIC-STAR
论文作者
论文摘要
横向自旋传输，$ d_ {tt} $，$λ$和$ \overlineλ$ hyperons in $ p $+$ p $ collisisions中预计对$ s $和$ \ bar {s} $ quark {s} $ quark Transversity分布敏感，对质子的质子和横向极化的碎片功能。 Star实验已发布了$λ$和$ \overlineλ$ hyperons的横向自旋转移的第一个测量，横向极化$ p $ p $ p $+$ p $ collisions在$ \ sqrt {s} $ = 200 gev pseudo-rapities in pseudo-rapities $ |η|η| <1.2 $和横向动量最高为8 GEV/$ C $，根据2012年的数据。2015年，收集了$ p $+$ p $ collisisions的数据样本，$ \ sqrt {s} $ = 200 GEV，大约是2012年数据大的两倍。此贡献介绍了$λ$的横向自旋传输的初步结果，$ d_ {tt} $，$λ$和$ \overlineλ$ hyperon与横向动量和横向动量和横向动量和基于2015年数据中的超子的分数动量。
The transverse spin transfer, $D_{TT}$, of $Λ$ and $\overlineΛ$ hyperons in $p$+$p$ collisions is expected to be sensitive to the $s$ and $\bar{s}$ quark transversity distributions in the proton and to the transversely polarized fragmentation functions. The STAR experiment has published the first measurement of the transverse spin transfer of $Λ$ and $\overlineΛ$ hyperons in transversely polarized $p$+$p$ collisions at $\sqrt{s}$ = 200 GeV within pseudo-rapidity $|η| < 1.2$ and for the transverse momenta up to 8 GeV/$c$ based on the data taken in 2012. In 2015, a data sample of $p$+$p$ collisions at $\sqrt{s}$ = 200 GeV, about two times larger than the 2012 data, was collected. This contribution presents the preliminary results of the transverse spin transfer, $D_{TT}$, of $Λ$ and $\overlineΛ$ hyperon versus transverse momentum and fractional momentum of the hyperon within a jet, based on 2015 data.
