Measurement of the exclusive ? production cross-section in pp collisions at s = 7 $$ \sqrt{s}=7 $$ TeV and 8 TeV
Measurement of the exclusive ? production cross-section in pp collisions at s = 7 $$ \sqrt{s}=7 $$ TeV and 8 TeV
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测量独家？
DOI：
10.1007/jhep09(2015)084
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发表时间：
2015
影响因子：
5.4
通讯作者：
Aaij R
中科院分区：
文献类型：
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作者：
Aaij R
利用LHCb实验记录的pp碰撞数据，研究了中心排他产生的π（nS）态，其中π（nS）共振衰减到μ+ μ−末态.横截面是在快度范围2< y（λ）< 4内测量的。其中μ子在伪快度范围2<n（μ±）< 4中重建。5.数据样本对应于2.9 fb− 1的积分光度，并在7 TeV和8 TeV的质心能量下收集。测得的1S和2S生产横截面为
A study is presented of central exclusive production of Υ (nS) states, where the Υ (nS) resonances decay to the μ+ μ− final state, using pp collision data recorded by the LHCb experiment. The cross-section is measured in the rapidity range 2< y (Υ)< 4. 5 where the muons are reconstructed in the pseudorapidity range 2< η (μ±)< 4. 5. The data sample corresponds to an integrated luminosity of 2.9 fb− 1 and was collected at centre-of-mass energies of 7 TeV and 8 TeV. The measured Υ (1S) and Υ (2S) production cross-sections are