论文标题
在phe Collisions $ \ sqrt {s_ {nn}} = 110 $ gev中的抗蛋白腐烂的抗蛋白质生产的测量
Measurement of antiproton production from antihyperon decays in pHe collisions at $\sqrt{s_{NN}}=110$ GeV
论文作者
论文摘要
当前，在原发性宇宙射线和星际介质之间碰撞中，对宇宙抗蛋白质通量测量的解释受到太空传播实验的测量。使用质子在LHCB实验相互作用区域的靠近静脉核上的6.5 TEV入射在氦核上的碰撞，从抗蛋白衰变与迅速产生的抗抗脂子的比率是12至110 GEV/c之间的抗抗蛋白矩。也仅测量了主要的抗Hyyperon贡献，即$ \barλ\ to \ bar {p}π^+$从迅速产生的$ \barλ$颗粒中衰减。结果补充了从相同数据样本获得的迅速抗抗蛋白产生的测量。在该测量的能量量表上，观察到抗抗蛋白酶产生的抗抗蛋白贡献明显大于常用的耐药性生产模型的预测。
The interpretation of cosmic antiproton flux measurements from space-borne experiments is currently limited by the knowledge of the antiproton production cross-section in collisions between primary cosmic rays and the interstellar medium. Using collisions of protons with an energy of 6.5 TeV incident on helium nuclei at rest in the proximity of the interaction region of the LHCb experiment, the ratio of antiprotons originating from antihyperon decays to prompt production is measured for antiproton momenta between 12 and 110 GeV/c. The dominant antihyperon contribution, namely $\barΛ \to \bar{p} π^+$ decays from promptly produced $\barΛ$ particles, is also exclusively measured. The results complement the measurement of prompt antiproton production obtained from the same data sample. At the energy scale of this measurement, the antihyperon contributions to antiproton production are observed to be significantly larger than predictions of commonly used hadronic production models.
