Measurement of the inelastic proton-proton cross-section at √s=7 TeV with the ATLAS detector.

Measurement of the inelastic proton-proton cross-section at √s=7 TeV with the ATLAS detector.
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DOI:
10.1038/ncomms1472
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发表时间:
2011-09-06
影响因子:
16.6
通讯作者:
--
中科院分区:
综合性期刊1区
文献类型:
--
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质子-质子相互作用速率对质心的依赖性 碰撞能,即碰撞能,对强子和强子都是至关重要的 对撞机物理学和粒子天体物理学。依赖性尚无法计算 从第一原理;因此,需要实验测量。这里我们 首次测量了非弹性质子-质子相互作用 使用ATLAS在质心能量为7 TeV时的横截面 大型强子对撞机的探测器事件是通过要求点击 闪烁计数器安装在探测器的前部区域。非弹性 测得的截面为60.3±2.1 mb, >5×10−6,其中 不变质量,MX,强子选择使用最大的 事件中的速度差距。对于衍射事件,这对应于需要 至少有一个离解质量大于15.7 GeV。质子-质子总截面的测量 碰撞对于粒子物理学来说是至关重要的。在这里,第一个 测量了质子-质子非弹性截面 使用ATLAS探测器在大的能量为7万亿电子伏的碰撞 强子对撞机。
The dependence of the rate of proton–proton interactions on the centre-of-mass collision energy, √s, is of fundamental importance for both hadron collider physics and particle astrophysics. The dependence cannot yet be calculated from first principles; therefore, experimental measurements are needed. Here we present the first measurement of the inelastic proton–proton interaction cross-section at a centre-of-mass energy, √s, of 7 TeV using the ATLAS detector at the Large Hadron Collider. Events are selected by requiring hits on scintillation counters mounted in the forward region of the detector. An inelastic cross-section of 60.3±2.1 mb is measured for ξ>5×10−6, where ξ is calculated from the invariant mass, MX, of hadrons selected using the largest rapidity gap in the event. For diffractive events, this corresponds to requiring at least one of the dissociation masses to be larger than 15.7 GeV. The measurement of the total cross-section of proton–proton collisions is of fundamental importance for particle physics. Here, the first measurement of the inelastic cross-section is presented for proton–proton collisions at an energy of 7 teraelectronvolts using the ATLAS detector at the Large Hadron Collider.
DOI: 10.1007/s002880050388
发表时间: 1997-04-01
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作者:
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影响因子: 2.8
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DOI: 10.1016/0550-3213(84)90315-8
发表时间: 1984-01-01
期刊: NUCLEAR PHYSICS B
影响因子: 2.8
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