QCD Axial Anomaly Enhances the ηη' Decay of the Hybrid Candidate η1(1855)
We study the hybrid mesons with the exotic quantum number IG JPC = 0+1−+ and investigate their decays into the ηη', a1(1260)π, f1(1285)η, f1(1420)η, K*(892)K-, K1(1270)K-, and K1(1400)K-,, channels. It is found that the QCD axial anomaly enhances the decay width of the ηη' channel although...
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| Format: | Article |
| Language: | English |
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Institute of Physics
2022
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| Online Access: | View Fulltext in Publisher |
| LEADER | 01208nam a2200157Ia 4500 | ||
|---|---|---|---|
| 001 | 10.1088-0256-307X-39-5-051201 | ||
| 008 | 220630s2022 CNT 000 0 und d | ||
| 020 | |a 0256307X (ISSN) | ||
| 245 | 1 | 0 | |a QCD Axial Anomaly Enhances the ηη' Decay of the Hybrid Candidate η1(1855) |
| 260 | 0 | |b Institute of Physics |c 2022 | |
| 520 | 3 | |a We study the hybrid mesons with the exotic quantum number IG JPC = 0+1−+ and investigate their decays into the ηη', a1(1260)π, f1(1285)η, f1(1420)η, K*(892)K-, K1(1270)K-, and K1(1400)K-,, channels. It is found that the QCD axial anomaly enhances the decay width of the ηη' channel although this mode is strongly suppressed by the small p-wave phase space. Our results support the interpretation of the η1(1855) recently observed by BESIII as the s-sg hybrid meson of IGJPC = 0+1−+. The QCD axial anomaly ensures the ηη' decay mode to be a characteristic signal of the hybrid nature of the η1(1855). © 2022 Chinese Physical Society and IOP Publishing Ltd | |
| 700 | 1 | 0 | |a Chen, H.-X. |e author |
| 700 | 1 | 0 | |a Su, N. |e author |
| 700 | 1 | 0 | |a Zhu, S.-L. |e author |
| 773 | |t Chinese Physics Letters | ||
| 856 | |z View Fulltext in Publisher |u https://doi.org/10.1088/0256-307X/39/5/051201 | ||