Search for new particles
1977 ◽
Vol 355
(1683)
◽
pp. 493-513
Keyword(s):
New Type
◽
We present a description of an experiment carried out at the 30GeV Alternating Gradient Synchrotron of the Brookhaven National Laboratory. The experiment used a high intensity slow extracted proton beam of between 10 10 and 2 × 10 12 protons per pulse and measured the e + e - mass spectrum from the reaction p+Be→e + e - +X. The result of this experiment shows the production of a new type of particle, J, which decays to e + e - with a width consistent with zero. Experimental searches for more new particles will also be presented.