A search for free neutron-antineutron oscillations has been carried out at the Pavia Triga Mark II research reactor. A thin carbon target is crossed by a beam of thermal neutrons propagating in a 18.5 m long channel where the earth magnetic field is attenuated by a factor of 50. The total neutron current through the target is 3.2×10 10 n/s. Possible antineutron annihilations are identified by a large track detector surrounding the target. A lower limit on the oscillation time of 4.7×10 5 s (90% C.L.) has been reached. © 1989 Springer-Verlag.
SEARCH FOR FREE NEUTRON-ANTINEUTRON OSCILLATIONS / G., Bressi; E., Calligarich; M., Cambiaghi; R., Dolfini; M., Genoni; A., Gigli Berzolari; A., Lanza; G., Liguori; F., Mauri; A., Piazzoli; S. P., Ratti; P., Torre; Bini, Cesare; M., Conversi; DE ZORZI, Guido; Gauzzi, Paolo; F., Massa; D., Zanello; R., Cardarelli; R., Santonico; D., Scannicchio; M., Terrani. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - 43:2(1989), pp. 175-179. [10.1007/bf01588203]
SEARCH FOR FREE NEUTRON-ANTINEUTRON OSCILLATIONS
BINI, Cesare;DE ZORZI, Guido;GAUZZI, Paolo;
1989
Abstract
A search for free neutron-antineutron oscillations has been carried out at the Pavia Triga Mark II research reactor. A thin carbon target is crossed by a beam of thermal neutrons propagating in a 18.5 m long channel where the earth magnetic field is attenuated by a factor of 50. The total neutron current through the target is 3.2×10 10 n/s. Possible antineutron annihilations are identified by a large track detector surrounding the target. A lower limit on the oscillation time of 4.7×10 5 s (90% C.L.) has been reached. © 1989 Springer-Verlag.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
