Polarization observables for millicharged particles in photon collisions

Gabrielli Emidio; Marzola Luca; Milotti EdoardoVeermae Hardi

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Polarization observables for millicharged particles in photon collisions

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Particles in a hidden sector can potentially acquire a small electric charge through their interaction with the Standard Model and can consequently be observed as millicharged particles. We systematically compute the production of millicharged scalar, fermion, and vector boson particles in collisions of polarized photons. The presented calculation is model independent and is based purely on the assumptions of electromagnetic gauge invariance and unitarity. Polarization observables are evaluated and analyzed for each spin case. We show that the photon polarization asymmetries are a useful tool for discriminating between the spins of the produced millicharged particles. Phenomenological implications for searches of millicharged particles in dedicated photon-photon collision experiments are also discussed.

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《Physical review, D》 |2016年第9期|共11页
作者
Gabrielli Emidio; Marzola Luca; Milotti EdoardoVeermae Hardi;
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作者单位

NICPB, Ravala 10, EE-10143 Tallinn, Estonia;

Univ Trieste, Sez Teor, Dipartimento Fis, Str Costiera 11, I-34151 Trieste, Italy;

Ist Nazl Fis Nucl, Sez Trieste, Via Valerio 2, I-34127 Trieste, Italy;

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正文语种英语
中图分类粒子物理学;场论;
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Polarization observables for millicharged particles in photon collisions

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