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ISSN - 03702693, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2015, vol. 740, p. 273-277

Search for the process e+e-→Λ'(958) with the CMD-3 detector

Akhmetshin R. R., Anisenkov A. V., Aulchenko V. M., Banzarov V. Sh, Bashtovoy N. S., Berkaev D. E., Bondar A. E., Bragin A. V., Eidelman S. I., Epifanov D. A., Epshteyn L. B., Erofeev A. L., Fedotovich G. V., Gayazov S. E., Grebenuk A. A., Grigoriev D. N., Gromov E. N., Ignatov F. V., Karpov S. V., Kazanin V. F., Khazin B. I., Koop I. A., Kovalenko O. A., Kozyrev A. N., Kozyrev E. A., Krokovny P. P., Kuzmenko A. E., Kuzmin A. S., Logashenko I. B., Lukin P. A., Mikhailov K. Yu, Muchnoi N. Yu, Okhapkin V. S., Pestov Yu N., Perevedentsev E. A., Popov A. S., Razuvaev G. P., Rogovsky Yu A., Romanov A. L., Ruban A. A., Ryskulov N. M., Ryzhenenkov A. E., Shebalin V. E., Shemyakin D. N., Shwartz B. A., Shwartz D. B., Sibidanov A. L., Shatunov P. Yu, Shatunov Yu M., Solodov E. P., Titov V. M., Talyshev A. A., Vorobiov A. I., Yudin Yu V.

© 2014. A search for the process e+e-→Λ'(958) in the π+π-Λ→π+π-γγ final state has been performed with the CMD-3 detector at the VEPP-2000 e+e- collider. Using an integrated luminosity of 2.69 pb-1 collected at the center-of-mass energy Ec.m.=957.68 MeV we set an upper limit for the product of electronic width and branching fractions D{africanΛ'(958)→e+e-{dot operator}BΛ'(958)→π+π-Λ{dot operator}BΛ→γγ<0.00041 eV at 90% C.L.