Search for Axionlike Particles Produced in e(+)e(-) Collisions at Belle II
- Title
- Search for Axionlike Particles Produced in e(+)e(-) Collisions at Belle II
- Author
- 천병구
- Issue Date
- 2020-10
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v. 125, no. 16, article no. 161806
- Abstract
- 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).
- URI
- https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.125.161806https://repository.hanyang.ac.kr/handle/20.500.11754/171822
- ISSN
- 0031-9007; 1079-7114
- DOI
- 10.1103/PhysRevLett.125.161806
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML