Unitarity constraints on dimension-six operators
Unitarity constraints on dimension-six operators
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DOI：
10.1103/physrevd.91.035014
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发表时间：
2014-11
影响因子：
5
通讯作者：
T. Corbett;O. Éboli;M. C. Gonzalez-Garcia
中科院分区：
文献类型：
--
作者：
T. Corbett;O. Éboli;M. C. Gonzalez-Garcia
通过分析矢量玻色子和希格斯散射过程以及标准模型费米子对电弱规范玻色子的非弹性散射，得到了六维算符的分波么正约束。我们考虑了所有耦合通道，所有可能的螺旋度振幅，并探索了反常耦合的六维参数空间。我们的分析表明，对于那些影响希格斯耦合的算符，对希格斯和弱电数据的全局数据分析给出了90%的置信度约束，如果$\srt{S}\leq 3.2\；{\rm TeV}$，则不违反统一性。对于纯规范玻色子算符，三规范玻色子分析的现有界限表明，在其目前所允许的90%的置信度范围内，在质心能量为$Sqt{S}\Geq2.4\；{Rm TeV}$的质心能量处，可以在$f‘到V’‘中违反整体性。
We obtain the partial-wave unitarity constraints on dimension-six operators stemming from the analyses of vector boson and Higgs scattering processes as well as the inelastic scattering of standard model fermions into electroweak gauge bosons. We take into account all coupled channels, all possible helicity amplitudes, and explore a six-dimensional parameter space of anomalous couplings. Our analysis shows that for those operators affecting the Higgs couplings, present 90% confidence level constraints from global data analysis of Higgs and electroweak data are such that unitarity is not violated if $\sqrt{s}\leq 3.2\;{\rm TeV}$. For the purely gauge-boson operator $O_{WWW}$, the present bounds from triple-gauge boson analysis indicate that within its presently allowed 90% confidence level range unitarity can be violated in $f\bar f' \to V V'$ at center-of-mass energy $\sqrt{s}\geq 2.4\;{\rm TeV}$.