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Titolo:
MULTIPLICITY DISTRIBUTIONS FROM CENTRAL COLLISIONS OF O-16+CU AT 14.6A GEV C AND INTERMITTENCY/
Autore:
ABBOTT T; AKIBA Y; ALBURGER D; BEAVIS D; BEERY P; BLOOMER MA; BOND PD; CHASMAN C; CHEN Z; CHU YY; COLE BA; COSTALES JB; CRAWFORD HJ; CUMMING JB; DEBBE R; DUEK E; ENGELAGE J; FUNG SY; GRODZINS L; GUSHUE S; HAMAGAKI H; HANSEN O; HAUSTEIN P; HOMMA S; HUANG HZ; IKEDA Y; KANG J; KATCOFF S; KAUFMAN S; LEDOUX RJ; LEVINE MJ; LINDSTROM PJ; MIAKE Y; MORSE RJ; NAGAMIYA S; OLNESS J; PARSONS CG; REMSBERG LP; SAKURAI H; SARABURA M; SETO R; STEADMAN SG; STEPHANS GSF; SUGITATE T; TANAKA M; TANNENBAUM MJ; TORIKOSHI M; VANDIJK JH; VIDEBAEK E; VIENT M; VINCENT P; VULGARIS E; VUTSADAKIS V; WATSON WA; WEGNER HE; WOODRUFF DS; ZAJC WA;
Indirizzi:
REEDLEY COLL REEDLEY CA 93654 ARGONNE NATL LAB ARGONNE IL 60439 BROOKHAVEN NATL LAB UPTON NY 11973 UNIV CALIF BERKELEY,SPACE SCI LAB BERKELEY CA 94720 UNIV CALIF RIVERSIDE RIVERSIDE CA 92507 COLUMBIA UNIV NEW YORK NY 10027 NEVIS LABS IRVINGTON NY 10533 HIROSHIMA UNIV HIROSHIMA 730 JAPAN UNIV TOKYO,INST NUCL STUDY TOKYO 188 JAPAN KYUSHU UNIV FUKUOKA 812 JAPAN UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB BERKELEY CA 94720 MIT CAMBRIDGE MA 02139 UNIV TOKYO,DEPT PHYS TOKYO 113 JAPAN
Titolo Testata:
Physical review. C. Nuclear physics
fascicolo: 5, volume: 52, anno: 1995,
pagine: 2663 - 2678
SICI:
0556-2813(1995)52:5<2663:MDFCCO>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHARGED-PARTICLE MULTIPLICITY; NUCLEUS-NUCLEUS COLLISIONS; HEAVY-ION INTERACTIONS; HIGH-ENERGY COLLISIONS; PP COLLISIONS; RAPIDITY DISTRIBUTIONS; E+E ANNIHILATION; 250 GEV/C; PSEUDORAPIDITY INTERVALS; 2-PARTICLE CORRELATIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
96
Recensione:
Indirizzi per estratti:
Citazione:
T. Abbott et al., "MULTIPLICITY DISTRIBUTIONS FROM CENTRAL COLLISIONS OF O-16+CU AT 14.6A GEV C AND INTERMITTENCY/", Physical review. C. Nuclear physics, 52(5), 1995, pp. 2663-2678

Abstract

The E-802 Collaboration at the BNL-AGS has measured charged particle multiplicity distributions from central (ZCAL) collisions of O-16+Cu at 14.6A GeV/c as a function of the pseudorapidity interval delta eta greater than or equal to 0.1 in the range 1.2 less than or equal to etaless than or equal to 2.2. The fluctuations of these distributions asa function of the pseudorapidity interval have been studied by the method of normalized factorial moments and also by directly fitting the measurements to negative binomial distributions (NBD). Excellent fits to NBD were obtained in all delta eta bins, allowing, for the first time, a systematic formulation of the subject of intermittency in terms of distributions to complement the description based on normalized factorial moments. In agreement with all previous measurements of NBD fits to multiplicity distributions in hadron and lepton reactions, the k parameter of the NBD fit for central O-16+Cu collisions is found to exhibit an apparently linear increase with the Sg interval, albeit with a much steeper slope than for other reactions, and a nonzero intercept, k(0)not equal 0. The evolution of the NBD parameter k(delta eta) is used to determine the two-particle short-range rapidity correlation length for central O-16+Cu collisions, xi=0.18+/-0.05, which is much shorter than the value xi similar to 1-3 for hadron collisions, but this is a quantitative rather than a qualitative difference. These results lead to a simple and elegant explanation of the intermittency formalism, without resort to fractals, for all reactions, which demystifies intermittency-for O-16+Cu central collisions, intermittency is nothing more than the apparent statistical independence of the multiplicity in small pseudorapidity bins, delta eta similar to 0.2, due to the surprisingly short two-particle rapidity correlation length.

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Documento generato il 15/07/20 alle ore 14:47:27