束辐射对e ~+e ~-储存环能量和亮度的限制
Restriction on the energy and luminosity of e+e- storage rings due to beamstrahlung
摘要：
研究了束流辐射在高能e+e存储环对撞机（SRC）中的作用。由于单个高能束致辐射光子的发射而引起的粒子损失对SRC的亮度有一个基本的限制，在能量为2E_0 >~ 140 GeV的正面碰撞和能量为2E_0 >~ 40 GeV的蟹腰碰撞中。在考虑束辐射的情况下，我们探讨了在E_0=240-500 GeV范围内SRCs的可行性，这对希格斯玻色子的精确研究是有意义的。在2E_0=240 GeV，SRC被发现是与线性对撞机竞争;然而，在2E_0=400-500 GeV，可达到的SRC亮度将是一个因素15-25小于预期。
英文摘要：
The role of beamstrahlung in high-energy e+e- storage-ring colliders (SRCs) is examined. Particle loss due to the emission of single energetic beamstrahlung photons is shown to impose a fundamental limit on SRC luminosities at energies 2E_0 >~ 140 GeV for head-on collisions and 2E_0 >~ 40 GeV for crab-waist collisions. With beamstrahlung taken into account, we explore the viability of SRCs in the E_0=240-500 GeV range, which is of interest in the precision study of the Higgs boson. At 2E_0=240 GeV, SRCs are found to be competitive with linear colliders; however, at 2E_0=400-500 GeV, the attainable SRC luminosity would be a factor 15-25 smaller than desired.
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