We present results of a search for neutral strange quark matter (strangelets) in 11.6A GeV/c Aut-Pb reactions from the 1995 run of experiment E864 at the Brookhaven Alternating Gradient Synchrotron. We have sampled approximately 1.3 billion 10% most central Au+Pb interactions and have observed no statistically significant signal for neutral strangelet states with baryon number in the range 6<A<100. We set upper limits on the production of these exotic states at the level of 8 x 10(-8) per central collision for mass >20 GeV/c(2) These limits are the first limits reported on the production of heavy neutral strangelets. They complement searches for positively and negatively charged strangelets also conducted by our collaboration. We discuss the implications of these results on strangelet production mechanisms and the stability of strange quark matter
Search for neutral strange quark matter in high energy heavy ion collisions / Armstrong, T. A.; Barish, K.; Bennett, S. J.; Chikanian, A.; Coe, S. D.; Cormier, T. M.; de Cataldo, G.; Davies, R.; Dee, P. R.; Diebold, G. E.; Fachini, P.; Finch, L. E.; George, N. K.; Giglietto, N.; Greene, S. V.; Haridas, P.; Hill, J. C.; Hirsch, A. S.; Hoversten, R. A.; Huang, H. Z.; Kim, B.; Kumar, B. S.; Lainus, T.; Lajoie, J. G.; Lewis, R. A.; Li, Q.; Li, Y.; Libby, B.; Maguire, C. F.; Majka, R. D.; Munhoz, M. G.; Nagle, J. L.; Pless, I. A.; Pope, J. K.; Porile, N. T.; Pruneau, C. A.; Rabin, M. S.; Raino, A.; Reid, J. D.; Rimai, A.; Rotondo, F. S.; Sandweiss, J.; Scharenberg, R.; Slaughter, A. J.; Smith, G. A.; Spinelli, P.; Tincknell, M. L.; Toothacker, W. S.; van Buren, G.; Wohn, F. K.; Zhao, K.. - In: PHYSICAL REVIEW. C, NUCLEAR PHYSICS. - ISSN 0556-2813. - STAMPA. - 59:4(1999), pp. R1829-R1833. [10.1103/PhysRevC.59.R1829]
Search for neutral strange quark matter in high energy heavy ion collisions
Giglietto, N.;
1999-01-01
Abstract
We present results of a search for neutral strange quark matter (strangelets) in 11.6A GeV/c Aut-Pb reactions from the 1995 run of experiment E864 at the Brookhaven Alternating Gradient Synchrotron. We have sampled approximately 1.3 billion 10% most central Au+Pb interactions and have observed no statistically significant signal for neutral strangelet states with baryon number in the range 6I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
