Axion-like-particle decay in strong electromagnetic backgrounds
Axion-like-particle decay in strong electromagnetic backgrounds
复制标题
强电磁背景下的类轴子粒子衰变
DOI:
10.1007/jhep12(2019)162
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发表时间:
2019
影响因子:
5.4
通讯作者:
King B
中科院分区:
文献类型:
--
作者:
King B
The decay of a massive pseudoscalar, scalar and U (1) boson into an electron-positron pair in the presence of strong electromagnetic backgrounds is calculated. Of particular interest is the constant-crossed-field limit, relevant for experiments that aim to measure high-energy axion-like-particle conversion into electron-positron pairs in a magnetic field. The total probability depends on the quantum nonlinearity parameter—a product of field and lightfront momentum invariants. Depending on the seed particle mass, different decay regimes are identified. In the below-threshold case, we find the probability depends on a non-perturbative tunneling exponent depending on the quantum parameter and the particle mass. In the above-threshold case, we find that when the quantum parameter is varied linearly, the probability oscillates nonlinearly around the spontaneous decay probability. A strong-field limit is identified in which the threshold is found to disappear. In modelling the fall-off of a quasi-constant-crossed magnetic field, we calculate probabilities beyond the constant limit and investigate when the decay probability can be regarded as locally constant.
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影响因子:
5
作者:
V. Baier;V. M. Katkov
通讯作者:
V. M. Katkov
影响因子:
8.6
作者:
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Fedotov Am
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A. Kurilin
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A. Kurilin
DOI:
--
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2013
期刊:
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作者:
S. Villalba
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S. Villalba
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