Multiplicity dependence of K*(892)0 and ϕ(1020) production in pp collisions at s=13 TeV
Multiplicity dependence of K*(892)0 and ϕ(1020) production in pp collisions at s=13 TeV
复制标题
s=13 TeV pp 碰撞中 K*(892)0 和 Ï(1020) 产生的多重相关性
DOI：
10.1016/j.physletb.2020.135501
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发表时间：
2020
影响因子：
4.4
通讯作者：
Ahmad, S.
中科院分区：
文献类型：
--
作者：
Acharya, S.;Adamová, D.;Adler, A.;Adolfsson, J.;Aggarwal, M.M.;Aglieri Rinella, G.;Agnello, M.;Agrawal, N.;Ahammed, Z.;Ahmad, S.
高多重质子-质子（pp）碰撞和重离子碰撞之间惊人的相似之处可以通过对pp碰撞中已识别强子的多重差分测量来探索。有了这些测量，就有可能研究决定强子横动量（p T）谱形状的集体流等机制，寻找由于扩展强子-气相散射效应而导致的短寿命强子共振产率的可能修改，并研究现象学模型提供的随多样性增加而增强奇异性产生的不同解释。在本文中，这些主题是通过测量在√s= 13 TeV的pp碰撞中速K(892) 0和φ(1020)介子作为带电粒子多重性的函数来解决的。结果包括p - T谱，p - T积分产额，平均横动量，以及这些共振产额与长寿命强子的产额之比。还讨论了与其他碰撞系统和能量的结果的比较，以及从现象学模型的预测。
The striking similarities that have been observed between high-multiplicity proton-proton (pp) collisions and heavy-ion collisions can be explored through multiplicity-differential measurements of identified hadrons in pp collisions. With these measurements, it is possible to study mechanisms such as collective flow that determine the shapes of hadron transverse momentum (p T) spectra, to search for possible modifications of the yields of short-lived hadronic resonances due to scattering effects in an extended hadron-gas phase, and to investigate different explanations provided by phenomenological models for enhancement of strangeness production with increasing multiplicity. In this paper, these topics are addressed through measurements of the K⁎(892) 0 and ϕ (1020) mesons at midrapidity in pp collisions at√ s= 13 TeV as a function of the charged-particle multiplicity. The results include the p T spectra, p T-integrated yields, mean transverse momenta, and the ratios of the yields of these resonances to those of longer-lived hadrons. Comparisons with results from other collision systems and energies, as well as predictions from phenomenological models, are also discussed.