Search for a Scalar Resonance in the ωφ System in the Collision of a 29 GeV/c Pion Beam with a Nuclear Target
https://doi.org/10.1134/S2079562920040065
Abstract
The charge-exchange reaction π-p→nω(783)φ(1020), ω→ π+ π- π0 , φ→K+K- is studied on the upgraded VES facility (U-70, Protvino). There are 905 events of ωφ - -system selected. The signal near threshold (M ~1.9 GeV/c2 ) is observed in ωφ invariant mass. The five-particles partial wave analyses shows that (Jps = 0++) state dominates. Under the assumption of the resonant nature of the signal, its mass and width are obtained: M = 1814 ± 31 MeV/c2, Г=182 ± 19 MeV/c2.
About the Author
M. S. Kholodenko
Institute for High Energy Physics, National Research Center Kurchatov Institute
Russian Federation
Russian Federation
Protvino, Moscow region, 142281
References
1. van Beveren E., Rijken T.A., Metzger K., Dullemond C., Rupp G., Ribeiro J.E. // Z. Phys. 1986. V. 30. P. 615; arXiv:0710.4067 [hep-ph].
2. Pelaez J.R. // Mod. Phys. Lett. A. 2004. V. 19. P. 2879; arXiv:hep-ph/0411107.
3. Ablikim M. et al. (BES Collab.) // Phys. Rev. Lett. 2006. V. 96. P. 162002; arXiv:hep-ex/0602031.
4. Ablikim M. et al. (BESIII Collab.) // Phys. Rev. D. 2013. V. 87. P. 032008; arXiv:1211.5668 [hep-ex].
5. Nikolaenko V. et al. // Int. J. Mod. Phys. A. 2009. V. 24. P. 295.
6. Dorofeev V.A. et al. // Instrum. Exp. Tech. 2016. V. 59. P. 658.
7. Ivashin A., Matveev V., Khokhlov Yu. IHEP Preprint 2010-10. 2010. Protvino: IHEP.
8. Zemach Ch. // Phys. Rev. 1965. V. 140. P. B97.
9. Martinez Torres A., Khemchandani K., Navarra F., Nielsen M., Oset E. // Phys. Lett. B. 2013. V. 719, P. 388; [arXiv:1210.6392 [hep-ph].
Review
For citations:
Kholodenko M.S. Search for a Scalar Resonance in the ωφ System in the Collision of a 29 GeV/c Pion Beam with a Nuclear Target. Nuclear Physics and Engineering. 2020;11(5):293-297. (In Russ.) https://doi.org/10.1134/S2079562920040065
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