Resonance production and ππ S-wave in π- + p → π- π- π+ + precoil at 190 GeV/c

被引：33

作者：

Adolph, C. ^{[9
]}

Akhunzyanov, R. ^{[8
]}

Alexeev, M. G. ^{[28
]}

Alexeev, G. D. ^{[8
]}

Amoroso, A. ^{[28
,29
]}

Andrieux, V. ^{[22
]}

Anosov, V. ^{[8
]}

Augustyniak, W. ^{[31
]}

Austregesilo, A. ^{[17
]}

Azevedo, C. D. R. ^{[2
]}

Badelek, B. ^{[32
]}

Balestra, F. ^{[28
,29
]}

Barth, J. ^{[5
]}

Beck, R. ^{[4
]}

Bedfer, Y. ^{[11
,22
]}

Bernhard, J. ^{[11
,14
]}

Bicker, K. ^{[11
,17
]}

Bielert, E. R. ^{[11
]}

Birsa, R. ^{[26
]}

Bisplinghoff, J. ^{[4
]}

Bodlak, M. ^{[19
]}

Boer, M. ^{[22
]}

Bordalo, P. ^{[13
,35
]}

Bradamante, F. ^{[25
,26
]}

Braun, C. ^{[9
]}

Bressan, A. ^{[25
,26
]}

Buechele, M. ^{[10
]}

Burtin, E. ^{[22
]}

Chang, W. -C. ^{[23
]}

Chiosso, M. ^{[28
,29
]}

Choi, I. ^{[30
]}

Chung, S. -U. ^{[17
,36
,37
]}

Cicuttin, A. ^{[26
,27
]}

Crespo, M. L. ^{[26
,27
]}

Curiel, Q. ^{[22
]}

Dalla Torre, S. ^{[26
]}

Dasgupta, S. S. ^{[7
]}

Dasgupta, S. ^{[25
,26
]}

Denisov, O. Yu. ^{[29
]}

Dhara, L. ^{[7
]}

Donskov, S. V. ^{[21
]}

Doshita, N. ^{[34
]}

Duic, V. ^{[25
]}

Duennweber, W.

Dziewiecki, M. ^{[33
]}

Efremov, A. ^{[8
]}

Eversheim, P. D. ^{[4
]}

Eyrich, W. ^{[9
]}

Faessler, M.

Ferrero, A. ^{[22
]}

机构：

[1] Univ Piemonte Orientale, I-15100 Alessandria, Italy

[2] Univ Aveiro, Dept Phys, P-3810193 Aveiro, Portugal

[3] Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany

[4] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany

[5] Univ Bonn, Inst Phys, D-53115 Bonn, Germany

[6] AS CR, Inst Sci Instruments, Brno 61264, Czech Republic

[7] Matrivani Inst Expt Res & Educ, Kolkata 700030, W Bengal, India

[8] Joint Inst Nucl Res, Dubna 141980, Russia

[9] Univ Erlangen Nurnberg, Inst Phys, D-91054 Erlangen, Germany

[10] Univ Freiburg, Inst Phys, D-79104 Freiburg, Germany

[11] CERN, CH-1211 Geneva 23, Switzerland

[12] Tech Univ Liberec, Liberec 46117, Czech Republic

[13] LIP, P-1000149 Lisbon, Portugal

[14] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany

[15] Miyazaki Univ, Miyazaki 8892192, Japan

[16] Lebedev Phys Inst, Moscow 119991, Russia

[17] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany

[18] Nagoya Univ, Nagoya, Aichi 464, Japan

[19] Charles Univ Prague, Fac Math & Phys, CR-18000 Prague, Czech Republic

[20] Czech Tech Univ, Prague 16636, Czech Republic

[21] Kurchatov Inst, State Sci Ctr, Inst High Energy Phys, Natl Res Ctr, Protvino 142281, Russia

[22] CEA IRFU SPhN Saclay, F-91191 Gif Sur Yvette, France

[23] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[24] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel

[25] Univ Trieste, Dept Phys, I-34127 Trieste, Italy

[26] Ist Nazl Fis Nucl, Trieste Sect, I-34127 Trieste, Italy

[27] Abdus Salam Int Ctr Theoret Phys, I-34151 Trieste, Italy

[28] Univ Turin, Dept Phys, I-10125 Turin, Italy

[29] Ist Nazl Fis Nucl, Torino Sect, I-10125 Turin, Italy

[30] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

[31] Natl Ctr Nucl Res, PL-00681 Warsaw, Poland

[32] Univ Warsaw, Fac Phys, PL-02093 Warsaw, Poland

[33] Warsaw Univ Technol, Inst Radioelect, PL-00665 Warsaw, Poland

[34] Yamagata Univ, Yamagata 9928510, Japan

[35] Univ Lisbon, Inst Super Tecn, Lisbon, Portugal

[36] Pusan Natl Univ, Dept Phys, Busan 609735, South Korea

[37] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[38] Chubu Univ, Kasugai, Aichi 4878501, Japan

[39] KEK, 1-1 Oho, Oho, Ibaraki 3050801, Japan

[40] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia

[41] Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany

[42] Uppsala Univ, Box 516, SE-75120 Uppsala, Sweden

来源：

PHYSICAL REVIEW D | 2017年 / 95卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

DECK-MODEL; MESONS; STATE; QCD;

D O I：

10.1103/PhysRevD.95.032004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The COMPASS collaboration has collected the currently largest data set on diffractively produced pi(-) pi(-) pi(+) final states using a negative pion beam of 190 GeV/c momentum impinging on a stationary proton target. This data set allows for a systematic partial-wave analysis in 100 bins of three-pion mass, 0.5 < m(3 pi) < 2.5 GeV/c(2), and in 11 bins of the reduced four-momentum transfer squared, 0.1 < t' < 1.0 (GeV/c)(2). This two-dimensional analysis offers sensitivity to genuine one-step resonance production, i.e. the production of a state followed by its decay, as well as to more complex dynamical effects in nonresonant 3 pi production. In this paper, we present detailed studies on selected 3p partial waves with J(PC) = 0(-+) ,1(++) ,2(-+) ,2(++) ,and 4(++). In these waves, we observe the well-known groundstate mesons as well as a new narrow axial-vector meson a(1)(1420) decaying into f(0) (980)pi. In addition, we present the results of a novel method to extract the amplitude of the pi(-)pi(+) subsystem with I(G)J(PC) = 0(+)0(++) in various partial waves from the pi(-)pi(-)pi(+) data. Evidence is found for correlation of the f (0)(980) and f(0)(1500) appearing as intermediate pi(-)pi(+) isobars in the decay of the known pi(1800) and pi(2)(1880).

引用

页数：59

共 65 条

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