Frontal attack toward particle production mechanism and interaction between deconfined quarks at unexplored high energies

2014 Fiscal Year Final Research Report

• Project/Area Number: 23340074
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Hiroshima University
• Principal Investigator: SHIGAKI Kenta 広島大学, 理学(系)研究科(研究院), 准教授 (70354743)
• Co-Investigator(Kenkyū-buntansha): SUGITATE Toru 広島大学, 大学院理学研究科, 教授 (80144806)
• Co-Investigator(Renkei-kenkyūsha): GUNJI Taku 東京大学, 大学院理学系研究科, 助教 (10451832) ; ASAKAWA Masayuki 大阪大学, 大学院理学研究科, 教授 (50283453) ; NONAKA Chiho 名古屋大学, 大学院理学研究科, 准教授 (10432238)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: パートン多体系 / 高エネルギー原子核衝突 / 粒子生成機構 / クォーク間相互作用 / 宇宙創成

Outline of Final Research Achievements

We established analysis techniques of triggered data sets for hard scattering p+p and A+A collision events at the LHC. We led neutral meson measurements via photons and physics discussions via comparison with QCD calculations.
A hotter, larger, and longer-lived partonic fireball is created in A+A collisions at 14 times higher energy than at RHIC. We found hard scattering probes useful for precise measurements in addition to discovery of new phenomena, utilizing event selection triggers with high transverse momentum photons. The importance of selective measurements of hard scattering events at the LHC energies has been demonstrated.

Free Research Field

高エネルギー原子核実験物理学