Phys. Rev. C
63,
054903
(2001)
[18 pages]
Search for strange quark matter produced in relativistic heavy ion collisions
T. A. Armstrong et al.
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T. A. Armstrong9, K. N. Barish4,*, S. Batsouli14, S. J. Bennett13, M. Bertaina8,†, A. Chikanian14, S. D. Coe14,‡, T. M. Cormier13, R. R. Davies10,§, G. DeCataldo1, P. Dee13, G. E. Diebold14, C. B. Dover2,**, P. Fachini13, B. Fadem6, L. E. Finch14, N. K. George14, N. Giglietto1, S. V. Greene12, P. Haridas8,††, J. C. Hill6, A. S. Hirsch10, R. A. Hoversten6, H. Z. Huang3,‡‡, H. Jaradat13, B. Kim13, B. S. Kumar14,a, T. Lainis11, J. G. Lajoie6,b, R. A. Lewis9, Q. Li13, B. Libby6,c, R. D. Majka14, T. E. Miller12, M. G. Munhoz13, J. L. Nagle5,b, I. A. Pless8, J. K. Pope14,d, N. T. Porile10, C. A. Pruneau13, M. S. Z. Rabin7, J. D. Reid9,e, A. Rimai10,f, A. Rose12, F. S. Rotondo14,g, J. Sandweiss14, R. P. Scharenberg10, A. J. Slaughter14, G. A. Smith9, P. Spinelli1, M. L. Tincknell10,h, W. S. Toothacker9, G. Van Buren8,i, W. K. Wilson13, F. K. Wohn6, E. J. Wolin14,j, Z. Xu14, and K. Zhao13
1University of BARI/INFN, Bari, Italy
2Brookhaven National Laboratory, Upton, New York 11973
3University of California at Los Angeles, Los Angeles, California 90095
4University of California at Riverside, Riverside, California 92521
5Columbia University, New York, New York 10027
6Iowa State University, Ames, Iowa 50011
7University of Massachusetts, Amherst, Massachusetts 01003
8Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
9Pennsylvania State University, University Park, Pennsylvania 16802
10Purdue University, West Lafayette, Indiana 47907
11United States Military Academy, West Point, New York 10996
12Vanderbilt University, Nashville, Tennessee 37235
13Wayne State University, Detroit, Michigan 48201
14Yale University, New Haven, Connecticut 06520
Received 26 September 2000; published 18 April 2001
We present the final results from Experiment 864 of a search for charged and neutral strange quark matter produced in interactions of 11.5 GeV/c per nucleon Au beams with Pt or Pb targets. Searches were made for strange quark matter with A>~5. Approximately 3×1010 10% most central collisions were sampled and no strangelet states with A<~100 were observed. We find 90% confidence level upper limits of approximately 10-8 per central collision for both charged and neutral strangelets. These limits are for strangelets with proper lifetimes greater than 50 ns. Also limits for H0-d and pineut production are given. The above limits are compared with the predictions of various models. The yields of light nuclei from coalescence are measured and a penalty factor for the addition of one nucleon to the coalescing nucleus is determined. This is useful in gauging the significance of our upper limits and also in planning future searches for strange quark matter.
© 2001 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevC.63.054903
DOI:
10.1103/PhysRevC.63.054903
*Formerly at Yale University and University of California at Los Angeles. †Present address: University of Torino/INFN, Torino, Italy. ‡Present address: Anderson Consulting, Hartford, CT. §Present address: Univ. of Denver, Denver CO 80208. **Deceased. ††Present address: Cambridge Systematics, Cambridge, MA 02139. ‡‡Formerly at Purdue University. aPresent address: McKinsey & Co., New York, NY 10022. bFormerly at Yale University. cPresent address: Department of Radiation Oncology, Medical College of Virginia, Richmond VA 23298. dPresent address: University of Tennessee, Knoxville TN 37996. ePresent address: Lock Haven University, Lock Haven, PA 17745. fPresent address: Institut de Physique Nucleaire, 91406 Orsay Cedex, France. gPresent address: Institute for Defense Analysis, Alexandria VA 22311. hPresent address: MIT Lincoln Laboratory, Lexington MA 02173. iPresent address: Brookhaven National Laboratory, Upton, NY 11973. jPresent address: College of William and Mary, Williamsburg, VA 23185.
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