Enhanced ΛΛ production near threshold in the 12C(K-,K+) reaction

被引：46

作者：

Ahn, JK ^{[1
]}

Aoki, S

Chung, KS

Chung, MS

En'yo, 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

机构：

[1] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[2] Kyoto Univ Educ, Kyoto 612, Japan

[3] Kyoto Sangyo Univ, Kyoto 606, Japan

[4] Kobe Univ, Fac Human Dev, Kobe, Hyogo 6578501, Japan

[5] Univ Tokyo, Inst Nucl Study, Tokyo 1888501, Japan

[6] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 305, Japan

[7] Osaka City Univ, Dept Phys, Osaka 5588585, Japan

[8] Natl Inst Fus Sci, Nagoya, Aichi 464, Japan

[9] Univ Saskatchewan, Saskatoon, SK S7N 0W0, Canada

[10] Korea Univ, Dept Phys, Seoul 136701, South Korea

[11] Yonsei Univ, Dept Phys, Seoul 120749, South Korea

来源：

PHYSICS LETTERS B | 1998年 / 444卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(98)01416-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Enhanced production of nn pairs, above levels predicted by a two-step process model, has been observed near threshold (in the mass range 2.23-2.26 GeV/c(2)) in the C-12(K-,K+) reaction at 1.66 GeV/c using a scintillating fiber target. The differential cross section for nn production in the momentum region 0.95 less than or equal to p(kappa+)less than or equal to l 1.3 GeV/c averaged over the range 2.3 degrees less than or equal to theta(kappa+)less than or equal to 14.7 degrees was found to be 7.6 +/- 1.3 +/- 0.9 mu b/sr, and that for the enhancement was found to be approximately 3 mu b/sr. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：267 / 272

页数：6

共 19 条

[1] ON THE PRODUCTION OF THE 6-QUARK H DIBARYON IN THE (K-,K+) REACTION [J].

AERTS, ATM ;

DOVER, CB .

PHYSICAL REVIEW D, 1983, 28 (03) :450-463

[2] Galaxy dynamics predictions in the nonsymmetric gravitational theory [J].

Moffat, JW ;

Sokolov, IY .

PHYSICS LETTERS B, 1996, 378 (1-4) :59-67

[3] Scalar and vector meson production and two-step processes in the (K-,K+) reaction on C-12 [J].

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 .

NUCLEAR PHYSICS A, 1997, 625 (1-2) :231-250

[4]

AHN JK, 1998, THESIS KOREA U

[5] A first measurement of the Lambda(Lambda)over-bar and Lambda Lambda ((Lambda)over-bar(Lambda)over-bar) spin compositions in hadronic Z(0) decays [J].

Alexander, G ;

Allison, J ;

Altekamp, N ;

Ametewee, K ;

Anderson, KJ ;

Anderson, S ;

Arcelli, S ;

Asai, S ;

Axen, D ;

Azuelos, G ;

Ball, AH ;

Barberio, E ;

Barlow, RJ ;

Bartoldus, R ;

Batley, JR ;

Beaudoin, G ;

Bechtluft, J ;

Beeston, C ;

Behnke, T ;

Bell, AN ;

Bell, KW ;

Bella, G ;

Bentvelsen, S ;

Berlich, P ;

Bethke, S ;

Biebel, O ;

Blobel, V ;

Bloodworth, IJ ;

Bloomer, JE ;

Bock, P ;

Bosch, HM ;

Boutemeur, M ;

Bouwens, BT ;

Braibant, S ;

Brown, RM ;

Burckhart, HJ ;

Burgard, C ;

Burgin, R ;

Capiluppi, P ;

Carnegie, RK ;

Carter, AA ;

Carter, JR ;

Chang, CY ;

Charlesworth, C ;

Charlton, DG ;

Chrisman, D ;

Chu, SL ;

Clarke, PEL ;

Cohen, I ;

Conboy, JE .

PHYSICS LETTERS B, 1996, 384 (1-4) :377-387

[6] DIRECT OBSERVATION OF SEQUENTIAL WEAK DECAY OF A DOUBLE HYPERNUCLEUS [J].

AOKI, S ;

BAHK, SY ;

CHUNG, KS ;

CHUNG, SH ;

FUNAHASHI, H ;

HAHN, CH ;

HARA, T ;

HIRATA, S ;

HOSHINO, K ;

IEIRI, M ;

IIJIMA, T ;

IMAI, K ;

ISHIGAMI, T ;

ITOW, Y ;

KAZUNO, M ;

KIKUCHI, K ;

KIM, CO ;

KIM, DC ;

KIM, JY ;

KOBAYASHI, M ;

KODAMA, K ;

MAEDA, Y ;

MASAIKE, A ;

MASUOKA, A ;

MATSUDA, Y ;

NAGOSHI, C ;

NAKAMURA, M ;

NAKANISHI, S ;

NAKANO, T ;

NAKAZAWA, K ;

NIWA, K ;

ODA, H ;

OKABE, H ;

ONO, S ;

OZAKI, R ;

PARK, IG ;

SATO, Y ;

SHIBUYA, H ;

SHIMIZU, HM ;

SONG, JS ;

SUGIMOTO, M ;

TAJIMA, H ;

TAKASHIMA, R ;

TAKEUTCHI, F ;

TANAKA, KH ;

TERANAKA, M ;

TEZUKA, I ;

TOGAWA, H ;

USHIDA, N ;

WATANABE, S .

PROGRESS OF THEORETICAL PHYSICS, 1991, 85 (06) :1287-1298

[7] Quark states near a threshold and the unstable H-dibaryon [J].

Bashinsky, SV ;

Jaffe, RL .

NUCLEAR PHYSICS A, 1997, 625 (1-2) :167-191

[8]

BASSALLECK B, 1997, P 6 C INT PART NUCL

[9] ENHANCEMENT IN LAMBDA LAMBDA INVARIANT MASS-SPECTRUM [J].

BEILLIER.P ;

AZEMOON, T ;

ARMENIAN, HK ;

KNIGHT, WL ;

GUY, JP ;

GOVAN, M ;

MILLER, DJ ;

TOVEY, SN ;

SCHNEPS, J ;

WOLSKY, G ;

WILQUET, G ;

FLIAGINE, VB ;

NASSALSK.J ;

MAYEUR, C .

PHYSICS LETTERS B, 1972, B 39 (05) :671-&

[10]

Flaminio V., 1983, 8302 CERNHERA

← 1 2 →