"Table 13" of "Search for resonances decaying into photon pairs in 139 fb$^{-1}$ of $pp$ collisions at $\sqrt{s} =$ 13 TeV with the ATLAS detector"

CERN-LHC. Search for resonances decay into photon pairs in 139 fb^{-1} of proton-proton collisions collected at a centre-of-mass energy of 13 TeV with the ATLAS detector between 2015--2018. The fiducial region for the combined spin-0/spin-2 resonance search is defined as: - 2 photons - E_T > 0.3 m_gamgam for the photon with leading E_T, and E_T > 0.25 m_gamgam for the photon with sub-leading E_T - |eta_gam| < 2.37 - An isolation requirement using all particles with lifetime greater than 10 ps at the generator level in a cone of Delta_R = 0.4 around the photon direction: E^iso_T< 0.05 E_T + 6 GeV. For the spin-2 resonance search, the acceptance and efficiencies are assumed to be those obtained from MC simulation of KK graviton decays.

CERN-LHC。本数据集基于2015至2018年间由ATLAS探测器采集的、质心系能量为13 TeV的139 fb⁻¹质子-质子碰撞数据，开展衰变为双光子末态的共振态搜寻研究。针对联合自旋0与自旋2共振态的搜寻，其 fiducial 区域（fiducial region）定义如下：
- 末态包含2个光子；
- 领头横向能量（transverse energy, E_T）光子的E_T > 0.3 m_γγ，次领头横向能量光子的E_T > 0.25 m_γγ；
- 光子的赝快度（pseudorapidity, η）满足|η_γ| < 2.37；
- 在光子方向周围ΔR=0.4的锥区内，针对蒙特卡洛生成层面上寿命大于10 ps的所有粒子施加孤立性要求：E^iso_T < 0.05 E_T + 6 GeV。
针对自旋2共振态的搜寻，其接受度与效率取自在卡鲁扎-克莱因（Kaluza-Klein, KK）引力子衰变的蒙特卡洛（Monte Carlo, MC）模拟中得到的结果。