Higgs boson production at a photon linear collider.
Higgs boson production at a photon linear collider.
复制标题
光子线性对撞机产生希格斯玻色子。
DOI：
10.1103/physrevd.48.4018
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
Caldwell
中科院分区：
文献类型：
--
作者：
Borden;Bauer;Caldwell
高能、高强度光子束的碰撞将为粒子物理提供新的机会。这些光束可以通过使用高功率激光的康普顿背散射在线性对撞机上获得。由此产生的光子线性对撞机提供了高度偏振的光束、大的光度和可变的光度光谱。我们研究了这样一台机器探索标准模型中希格斯部分的潜力。我们发现，一台能量为250GeV的光子线对撞机是寻找中等质量希格斯玻色子的极佳工具，其中偏振光子束是一个特殊的资产，因为它们可以在增强信号的同时抑制背景。在寻找中等质量标准模型希格斯玻色子的过程中，即使在中等亮度下，整个中等质量区域内超过10西格玛的信号也是可能的。更重要的是，光子线性对撞机应用于测量希格斯玻色子的双光子宽度，这一测量给出了关于自发对称破缺本质的关键信息。我们计算出，能量调谐到希格斯玻色子质量的光子线性对撞机可以测量希格斯玻色子的双光子宽度，在大多数中质量和重质量范围内，统计精度都优于10%。
The collision of high-energy, high-intensity photon beams would provide novel opportunities for particle physics. These beams could be obtained at a linear [ital e][sup +][ital e[minus]] collider via Compton backscattering using high-powered lasers. The resulting photon linear collider offers highly polarized beams, large luminosities, and a variable luminosity spectrum. We examine the potential of such a machine to explore the Higgs sector of the standard model. We find a photon linear collider with [radical][ital s] [approx]250 GeV to be an excellent tool to search for an intermediate-mass Higgs boson, with the polarized photon beams being a particular asset, as they can be used to suppress backgrounds while enhancing the signal. In searching for intermediate-mass standard model Higgs bosons, a signal in excess of 10[sigma] over the entire intermediate mass region is possible with even moderate luminosity. Even more important is the application of a photon linear collider to measurement of the two-photon width of the Higgs boson, a measurement which gives crucial information about the nature of spontaneous symmetry breaking. We calculate that a photon linear collider with energy tuned to the Higgs boson mass allows a measurement of the two-photon width of the Higgs boson with a statistical precisionmore » of better than 10% over most of the intermediate- and heavy-mass range.« less