Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
SCALAR AND VECTOR-MESON PRODUCTION AND 2-STEP PROCESSES IN THE (K-,K-12() REACTION ON C)
Autore:
AHN JK; AOKI S; CHUNG KS; CHUNG MS; ENYO H; FUKUDA T; FUNAHASHI H; GOTO Y; HIGASHI A; IEIRI M; IIJIMA T; IINUMA M; IMAI K; ITOW Y; LEE JM; MAKINO S; MASAIKE A; MATSUDA Y; MATSUYAMA Y; MIHARA S; NAGOSHI C; NOMURA I; PARK IS; SAITO N; SEKIMOTO M; SHIN YM; SIM KS; SUSUKITA R; TAKASHIMA R; TAKEUTCHI F; TLUSTY P; WEIBE S; YOKKAICHI S; YOSHIDA K; YOSHIDA M; YOSHIDA T; YAMASHITA S;
Indirizzi:
KYOTO UNIV,DEPT PHYS KYOTO 606 JAPAN KYOTO UNIV KYOTO 612 JAPAN KYOTO SANGYO UNIV KYOTO 606 JAPAN KOBE UNIV,FAC HUMAN DEV,NADA KU KOBE HYOGO 657 JAPAN UNIV TOKYO,INST NUCL STUDY TANASHI TOKYO 188 JAPAN NATL LAB HIGH ENERGY PHYS,KEK TSUKUBA IBARAKI 305 JAPAN OSAKA CITY UNIV,DEPT PHYS SUMIYOSHI OSAKA 558 JAPAN NATL INST FUS SCI,CHIKUSA KU NAGOYA AICHI 46401 JAPAN UNIV SASKATCHEWAN SASKATOON SK CANADA KOREA UNIV,DEPT PHYS SEOUL 136701 SOUTH KOREA YONSEI UNIV,DEPT PHYS SEOUL 120749 SOUTH KOREA
Titolo Testata:
Nuclear physics. A
fascicolo: 1-2, volume: 625, anno: 1997,
pagine: 231 - 250
SICI:
0375-9474(1997)625:1-2<231:SAVPA2>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
FIBER TRACK DETECTOR; H-DIBARYON; WEAK DECAY; SEARCH; HYPERNUCLEI; NUCLEI;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
J.K. Ahn et al., "SCALAR AND VECTOR-MESON PRODUCTION AND 2-STEP PROCESSES IN THE (K-,K-12() REACTION ON C)", Nuclear physics. A, 625(1-2), 1997, pp. 231-250

Abstract

The double strangeness exchange reaction (K-, Kf) is investigated with respect to the subthreshold production of scalar and vector mesons (f(0)/a(0)/phi) decaying into K+K- and the two-step processes induced by intermediate mesons and Xi- hyperons at p(K-)= 1.66 GeV/c using a scintillating fiber active target. The differential cross section (< d sigma/d Omega(L) >) averaged over the angular interval (2.3(0) less than or equal to theta(K+)(L) less than or equal to 14.7(0)) for the sub-threshold f(0)/a(0)/phi meson production with the K+K- decay is 11 +/-6 mu b/sr at 0.6 less than or equal to p(K+) < 0.95 GeV/c. The present result differs significantly from the theoretical calculation which predicts the contribution of the f(0)/a(0)/phi meson production to be predominant in the (K-, K+) reaction below p(K+) = 0.95 GeV/c. We found a sizable contribution from two-step (K-, K+) processes, characterized by production of two S = -1 hyperons, consistent with the result ofthe intra-nuclear cascade (INC) model calculation with respect to themeson-induced hyperon (or hyperon resonance) pair production in the momentum region 0.6 less than or equal to p(K+) < 0.95 GeV/c. The observed enhancement of the cross section for the two-step Lambda Lambda production beyond the prediction of the INC model at p(K+) similar or equal to 1.1 GeV/c could be due to the Xi(-) p --> Lambda Lambda reaction in C-12. (C) 1997 Published by Elsevier Science B.V.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 09:38:12