arXiv 1010.47542010-10-22hep-ex

在H1光生D* 和喷流

Photoproduction of D* and Jets at H1

Zlatka Staykova

备注：: on the behalf of the H1 Collaboration
发表信息：: PoS DIS2010:179,2010

摘要：

利用HERA II数据样本，用H1探测器研究了含粲介子$D^{*\pm}$和两个喷流的光生事件。在衰变道$D^{*\pm}\rightarrow D^0π^\pm\rightarrow K^\mpπ^\pmπ^\pm$中重建了$D^*$介子。使用包含性$k_t$算法重建射流，如果射流具有横向动量$p_t(\textrm{jet})>3.5\gev$，则选择射流。其中一个喷流与$D^*$介子本身有关，因此可以标记起源于作为介子的母体粲夸克的喷流。对于$D^*$介子和$D^*_\textrm{jet}$，$|η|<1.5$，测量的相空间被限制在中心快度内，而第二喷流被测量在$-1.5<η<2.9$内。测量了单微分截面和双微分分布，并与首阶蒙特卡罗（MC）事件发生器\PYTHIA和\CASCADE以及次至首阶MC发生器\MCATNLO进行了比较

英文摘要：

Photoproduction events containing a charmed meson $D^{*\pm}$ and two jets were investigated with the H1 detector using the HERA II data sample. The $D^*$ meson was reconstructed in the decay channel, $D^{*\pm}\rightarrow D^0π^\pm\rightarrow K^\mpπ^\pmπ^\pm$. Jets were reconstructed using the inclusive $k_t$ algorithm and were selected if they have transverse momenta $p_t(\textrm{jet})>3.5\gev$. One of the jets was associated with the $D^*$ meson itself, such that the jet originating from the parent charmed quark as the meson can be tagged. The phase space of the measurement is limited within central rapidity for the $D^*$ meson and the $D^*_\textrm{jet}$, $|η|<1.5$ while the second jet was measured within, $-1.5<η<2.9$. Single differential cross sections and double differential distributions were measured and compared to Leading Order Monte Carlo (MC) event generators, \PYTHIA and \CASCADE and with the Next--to--Leading order MC generator \MCATNLO

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

摘要：

英文摘要：

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