Measurement of V 0 production ratios in pp collisions at $ \sqrt {s} = 0.9 $ and 7 TeV
Measurement of V 0 production ratios in pp collisions at $ \sqrt {s} = 0.9 $ and 7 TeV
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$ sqrt {s} = 0.9 $ 和 7 TeV 时 pp 碰撞中 V 0 生成率的测量
DOI：
10.1007/jhep08(2011)034
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发表时间：
2011
影响因子：
5.4
通讯作者：
Aaij R
中科院分区：
文献类型：
--
作者：
Aaij R
LHCb 探测器根据 LHC 在 TeV 处传递的 0.3 nb−1 次 pp 碰撞和 1.8 nb−1 atTeV 处的 pp 碰撞来测量和产生比率。两个比率均表示为横向动量 p T 和速度 y 的函数，范围为 0.15< p T< 2.50 GeV/c 和 2.0< y< 4.5。两种能量的结果与速度损失的函数 Δ y= y 束− y 非常一致，并且与之前的测量结果一致。该比率用于测量从碰撞到探测器的重子数传输，其数据比模拟中预测的要小，特别是在高速情况下。该比率用于衡量奇夸克强子化中重子与介子的抑制，明显大于预期。
Theandproduction ratios are measured by the LHCb detector from 0.3 nb− 1 of pp collisions delivered by the LHC atTeV and 1.8 nb− 1 atTeV. Both ratios are presented as a function of transverse momentum, p T, and rapidity, y, in the ranges 0.15< p T< 2.50 GeV/c and 2.0< y< 4.5. Results at the two energies are in good agreement as a function of rapidity loss,∆ y= y beam− y, and are consistent with previous measurements. The ratio, measuring the transport of baryon number from the collision into the detector, is smaller in data than predicted in simulation, particularly at high rapidity. The ratio, measuring the baryon-to-meson suppression in strange quark hadronisation, is significantly larger than expected.