Resummed photon spectra for WIMP annihilation
Resummed photon spectra for WIMP annihilation
复制标题
WIMP 湮灭的恢复光子光谱
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
V. Vaidya
中科院分区：
文献类型：
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作者：
M. Baumgart;T. Cohen;I. Moult;N. Rodd;T. Slatyer;M. Solon;I. Stewart;V. Vaidya
本文建立了重WIMP湮没硬光子谱的有效场论描述。这有助于精确预测相关的线搜索，并允许纳入非平凡的能量分辨率的影响。我们的框架结合了非相对论EFTs和软共线有效理论（SCET）的技术，以及最近推出的研究喷气子结构的多尺度扩展。我们发现了一些有趣的功能，包括同时存在的SCETI和SCETII模式，以及共线软模式在电弱尺度。我们推导出一个因式分解公式，使出现在微扰谱中的领先的大Sudakov双周期，并列入索末菲增强效应的recremation。通过显式计算证明了这种分解的一致性达到对数级。我们的最终结果包含排他性和包容性的限制，从而提供了一个统一的描述这两个先前考虑的近似。我们估计实验灵敏度的影响，专注于具体的SU（2）W三重态费米子暗物质-纯葡萄酒-其中最强的约束是由于从银河系中心的伽马射线线的搜索。与之前的结果相比，我们发现了数值上显着的修正，从而强调了在解释当前和未来间接检测实验的数据时考虑光子光谱的重要性。
A bstractWe construct an effective field theory (EFT) description of the hard photon spectrum for heavy WIMP annihilation. This facilitates precision predictions relevant for line searches, and allows the incorporation of non-trivial energy resolution effects. Our framework combines techniques from non-relativistic EFTs and soft-collinear effective theory (SCET), as well as its multi-scale extensions that have been recently introduced for studying jet substructure. We find a number of interesting features, including the simultaneous presence of SCETI and SCETII modes, as well as collinear-soft modes at the electroweak scale. We derive a factorization formula that enables both the resummation of the leading large Sudakov double logarithms that appear in the perturbative spectrum, and the inclusion of Sommerfeld enhancement effects. Consistency of this factorization is demonstrated to leading logarithmic order through explicit calculation. Our final result contains both the exclusive and the inclusive limits, thereby providing a unifying description of these two previously-considered approximations. We estimate the impact on experimental sensitivity, focusing for concreteness on an SU(2)W triplet fermion dark matter — the pure wino — where the strongest constraints are due to a search for gamma-ray lines from the Galactic Center. We find numerically significant corrections compared to previous results, thereby highlighting the importance of accounting for the photon spectrum when interpreting data from current and future indirect detection experiments.
影响因子：
5.4
作者：
M. Beneke;M. Beneke;C. Hellmann;C. Hellmann;P. Ruiz-Femeńıa;P. Ruiz-Femeńıa
通讯作者：
M. Beneke;M. Beneke;C. Hellmann;C. Hellmann;P. Ruiz-Femeńıa;P. Ruiz-Femeńıa
影响因子：
8.6
作者：
T. Becher;M. Neubert;L. Rothen;D. Shao
通讯作者：
T. Becher;M. Neubert;L. Rothen;D. Shao
影响因子：
8.6
作者：
Abramowski, A.;Acero, F.;Zechlin, H. -S.
通讯作者：
Zechlin, H. -S.