A study of the reaction π-p→ωπ-p at 18 GeV/c:: the D and S decay amplitudes for b1(1235)→ωπ

被引：18
|
作者：
Nozar, M [1 ]
Adams, GS
Adams, T
Bar-Yam, Z
Bishop, JM
Bodyagin, VA
Brown, DS
Cason, NM
Chung, SU
Cummings, JP
Danyo, K
Demianov, AI
Denisov, SP
Dorofeev, V
Dowd, JP
Eugenio, P
Fan, XL
Gribushin, AM
Hackenburg, RW
Hayek, M
Hu, J
Ivanov, EI
Joffe, D
Kachaev, I
Kern, W
King, E
Kodolova, OL
Korotkikh, VL
Kostin, MA
Kuhn, J
Lipaev, VV
LoSecco, JM
Lu, M
Manak, JJ
Napolitano, J
Olchanski, C
Ostrovidov, AI
Pedlar, TK
Popov, AV
Ryabchikov, DI
Sarycheva, LI
Seth, KK
Shenhav, N
Shen, X
Shephard, WD
Sinev, NB
Stienike, DL
Suh, JS
Taegar, SA
Tomaradze, A
机构：
[1] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA
[2] Rensselaer Polytech Inst, Dept Phys, Troy, NY 12180 USA
[3] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA
[4] Univ Massachusetts, Dept Phys, N Dartmouth, MA 02747 USA
[5] Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow 119899, Russia
[6] Northwestern Univ, Dept Phys, Evanston, IL 60208 USA
[7] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[8] Protvino High Energy Phys Inst, Protvino 142284, Russia
来源：
PHYSICS LETTERS B | 2002年 / 541卷 / 1-2期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/S0370-2693(02)02194-9
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The reaction pi(-)p --> omegapi(-)p, omega --> pi(+)pi(-)pi(0) has been studied at 18 GeV/c. The omegapi(-) mass spectrum is found to be dominated by the b(1) (1235). Partial Wave Analysis (PWA) shows that b(1) production is dominated by natural parity exchange. The S-wave and D-wave amplitudes for b(1)(1235) --> omegapi have been determined, and it is found that the amplitude ratio, \D/S\ = 0.269 +/- (0.009)(stat) +/- (0.01)(sys) and the phase difference, phi(D - S) = 10.54degrees +/- (2.4degrees)(stat) +/- (3.9degrees)(sys). (C) 2002 Elsevier Science B.V. All rights reserved.
引用
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页码：35 / 44
页数：10
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