Publication: Search for Axionlike Particles Produced in e(+)e(-) Collisions at Belle II
Дата
2020
Авторы
Abudinen, F.
Adachi, I.
Aihara, H.
Akopov, N.
Pakhlov, P.
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Аннотация
We present a search for the direct production of a light pseudoscalar a decaying into two photons with the Belle II detector at the SuperKEKB collider. We search for the process e(+)e(-) -> gamma a, a -> gamma gamma in the mass range 0.2 < m(a) < 9.7 GeV/c(2) using data corresponding to an integrated luminosity of (445 +/- 3) pb(-1). Light pseudoscalars interacting predominantly with standard model gauge bosons (so-called axionlike particles or ALPs) are frequently postulated in extensions of the standard model. We find no evidence for ALPs and set 95% confidence level upper limits on the coupling strength g(a gamma gamma) of ALPs to photons at the level of 10(-3) GeV-1. The limits are the most restrictive to date for 0.2 < m(a) < 1 GeV/c(2).
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Цитирование
Search for Axionlike Particles Produced in e(+)e(-) Collisions at Belle II / Abudinen, F [et al.] // Physical Review Letters. - 2020. - 125. - № 16. - 10.1103/PhysRevLett.125.161806
URI
https://www.doi.org/10.1103/PhysRevLett.125.161806
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https://openrepository.mephi.ru/handle/123456789/22479
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http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000577074900004
https://openrepository.mephi.ru/handle/123456789/22479