在存在大量正负电子对产生的情况下，通过散射激光波长选择增强10 TeV双光子对撞机的亮度
Enhancing 10 TeV $γγ$-collider luminosity through scattering-laser wavelength selection in the presence of prolific electron-positron pair production
AI总结：
该研究针对10 TeV双光子对撞机，考虑正负电子对产生的自然限制与康普顿光子角发散，通过选择250 nm和1.25 nm散射激光波长增强其亮度，且次级正负电子对可用于重粒子产生研究。
AI中文摘要：
能够达到粒子物理10 TeV部分子质心系（pCM）前沿的双光子对撞机，可用于研究超出标准模型的现象。基于紧凑型线性尾场加速器技术，这种对撞机可通过康普顿散射多TeV轻子束与对撞机相互作用点附近的中等强度激光脉冲来实现，从而产生所需的γ光子。研究表明，在散射激光波长的宽范围内，即使存在散射激光与多TeV轻子束相互作用伴随产生的大量正负电子对，相互作用点处的双光子对撞仍能满足新粒子物理研究的亮度要求。值得注意的是，这种正负电子对产生对可实现的最大光子亮度施加了自然限制。考虑该限制以及康普顿光子的角发散，250 nm和1.25 nm散射激光可使双光子对撞机的亮度得到增强。此外，次级正负电子对本身可被用于物理研究，因为它们的亮度足够高，能以远超现有对撞机可及的速率产生重粒子以实现发现。
英文摘要：
A $γγ$-collider capable of reaching the 10 TeV parton-center-of-momentum (pCM) frontier of particle physics may enable the study of phenomena beyond the Standard Model. Based on compact linear wakefield accelerator technology, such a collider could be realized by Compton scattering multi-TeV lepton beams off moderate-intensity laser pulses close to the collider interaction point, producing the required $γ$-photons. It is shown that, for a wide range of scattering-laser wavelengths, $γγ$-collisions at the interaction point can meet the luminosity requirements for novel particle physics studies, even in the presence of the prolific electron-positron pair production that accompanies the interaction of the scattering laser with the multi-TeV lepton beam. Notably, this pair production imposes a natural limit on the maximum achievable photon luminosity. Accounting for this limit and for the angular divergence of the Compton photons yields an enhanced $γγ$-collider luminosity for 250 nm and 1.25 nm scattering lasers. Moreover, the secondary pairs can themselves be exploited in physics studies, since their luminosity is high enough to produce heavy particles at rates needed for discoveries well beyond the reach of existing colliders.
