Vector meson photoproduction in UPCs with FoCal

IF 3.4 3区物理与天体物理 Q2 PHYSICS, NUCLEAR

Journal of Physics G: Nuclear and Particle Physics Pub Date : 2022-11-29 DOI:10.1088/1361-6471/acc419

A. Bylinkin, J. Nystrand, D. Takaki

引用次数: 2

Abstract

We discuss the physics prospects of photon-induced measurements using the high-granularity FoCal detector to be installed at the ALICE experiment, covering the pseudorapidity interval 3.4 ≤ η ≤ 5.8. This new detector, scheduled to be in operation from Run 4, will explore the small Bjorken-x physics region in an unprecedented way. In this region the gluon saturation phenomenon is expected to be dominant. Combined with the rest of the ALICE subdetectors, including the zero degree calorimenters, FoCal will serve to reconstruct in a model-independent way the measured photoproduction cross sections for vectors mesons in a wide range of photon-target energies, down to x values of about 7 × 10-6 and 2 × 10-6 in ultra-peripheral photon–proton and photon–lead collisions, respectively.

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利用FoCal在UPCs中产生矢量介子

我们讨论了使用将安装在ALICE实验中的高粒度FoCal探测器进行光子诱导测量的物理前景，该探测器覆盖伪快度区间3.4≤η≤5.8。这个新的探测器计划从第四次运行开始运行，将以前所未有的方式探索比约肯x的小物理区域。在这个区域，胶子饱和现象预计将占主导地位。与ALICE的其他子探测器（包括零度热三聚体）相结合，FoCal将以一种与模型无关的方式重建在宽光子目标能量范围内测量的矢量介子的光生截面，在超外围光子-质子和光子-铅碰撞中，x值分别约为7×10-6和2×10-6。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Physics G: Nuclear and Particle Physics 物理-物理：核物理

CiteScore

7.60

自引率

5.70%

发文量

105

审稿时长

1 months

期刊介绍： Journal of Physics G: Nuclear and Particle Physics (JPhysG) publishes articles on theoretical and experimental topics in all areas of nuclear and particle physics, including nuclear and particle astrophysics. The journal welcomes submissions from any interface area between these fields. All aspects of fundamental nuclear physics research, including: nuclear forces and few-body systems; nuclear structure and nuclear reactions; rare decays and fundamental symmetries; hadronic physics, lattice QCD; heavy-ion physics; hot and dense matter, QCD phase diagram. All aspects of elementary particle physics research, including: high-energy particle physics; neutrino physics; phenomenology and theory; beyond standard model physics; electroweak interactions; fundamental symmetries. All aspects of nuclear and particle astrophysics including: nuclear physics of stars and stellar explosions; nucleosynthesis; nuclear equation of state; astrophysical neutrino physics; cosmic rays; dark matter. JPhysG publishes a variety of article types for the community. As well as high-quality research papers, this includes our prestigious topical review series, focus issues, and the rapid publication of letters.