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ISSN - 03702693, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 1998, vol. 425, p. 388-390

Upper limit on the η → π0π0 decay

Achasov M. N., Berdyugin A. V., Bozhenok A. V., Bukin D. A., Burdin S. V., Dimova T. V., Dolinskii S. I., Druzhinin V. P., Dubrovin M. S., Gaponenko I. A., Golubev V. B., Ivanchenko V. N., Korol A. A., Koshuba S. V., Nesterenko I. N., Pakhtusova E. V., Perevedentsev E. A., Salnikov A. A., Serednyakov S. I., Shary V. V., Shatunov Yu M., Sidorov V. A., Silagadze Z. K., Velikzhanin Yu S.

Upper bound Br(η → π0π0) < 6 · 10-4 with 90% confidence is reported from the SND experiment at the VEPP-2M collider. © 1998 Published by Elsevier Science B.V. All rights reserved.