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arXiv 1304.2189hep-exnucl-ex
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在LHC通过ALICE实验打开重口味分析

Open heavy flavour analysis with the ALICE experiment at LHC

Serhiy Senyukov for ALICE collaboration

摘要:

LHC的ALICE实验从2010年3月开始到10月底,在质量中心能量为7 TeV的质子-质子碰撞中获取数据。第一次重离子碰撞于2010年11月交付。在其他粒子中,粲介子和美介子可以用ALICE装置重建。由于开重味介子的光谱会受到介质中能量损失的影响,因此开重味介子为研究高能重离子碰撞中产生的热夸克物质提供了强有力的工具。测量这些粒子在质子-质子碰撞中也很重要。在这种情况下,它们为重离子碰撞提供了必要的参考,并允许在新的能量域中测试pQCD预测。介绍了重建D介子和B介子的不同方法以及所采用的选择和分析技术。中心快度区的D介子通过2、3、4叉强子衰变和单电子衰变重建。在前向区,半μ子衰变被用来测量D和B介子的产生。报道了D介子、单电子和单μ子的第一个结果。

英文摘要:

The ALICE experiment at the LHC was taking data in proton-proton collisions at the center-of-mass energy of 7 TeV starting from March till the end of October 2010. First heavy-ion collisions were delivered during November 2010. Among other particles, charmed and beauty mesons can be reconstructed by the ALICE apparatus. Open heavy flavour mesons provide a powerful tool to study hot quark matter produced in high energy heavy-ion collisions because their spectra are expected to be affected by energy loss in the medium. Measuring such particles is important also in proton-proton collisions. In this case they provide a necessary reference for heavy-ion collisions and allow to test pQCD predictions in a new energy domain. Different ways to reconstruct D and B mesons are described together with adopted selection and analysis techniques. D mesons in the central rapidity region are reconstructed via 2,3, and 4-prongs hadronic decays and via single electrons. In the forward region, semi-muonic decays are used to measure the production of D and B mesons. The first results for D mesons, single electrons and single muons are reported.

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。

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