Resonance Production and ππ S-wave in π- + p -> π- π- π+ + p_recoil at 190 GeV/c
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F17%3A00307614" target="_blank" >RIV/68407700:21340/17:00307614 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevD.95.032004" target="_blank" >https://doi.org/10.1103/PhysRevD.95.032004</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.95.032004" target="_blank" >10.1103/PhysRevD.95.032004</a>
Alternative languages
Result language
angličtina
Original language name
Resonance Production and ππ S-wave in π- + p -> π- π- π+ + p_recoil at 190 GeV/c
Original language description
The COMPASS collaboration has collected the currently largest data set on diffractively produced π-π-π+ 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<m3π<2.5 GeV/c2, 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 3π production. In this paper, we present detailed studies on selected 3π partial waves with JPC=0-+, 1++, 2-+, 2++, and 4++. In these waves, we observe the well-known ground-state mesons as well as a new narrow axial-vector meson a1(1420) decaying into f0(980)π. In addition, we present the results of a novel method to extract the amplitude of the π-π+ subsystem with IGJPC=0+0++ in various partial waves from the π-π-π+ data. Evidence is found for correlation of the f0(980) and f0(1500) appearing as intermediate π-π+ isobars in the decay of the known π(1800) and π2(1880).
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
<a href="/en/project/LM2015058" target="_blank" >LM2015058: Research Infrastructure for Experiments at CERN</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review D
ISSN
2470-0010
e-ISSN
2470-0029
Volume of the periodical
95
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
74
Pages from-to
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UT code for WoS article
000394092900001
EID of the result in the Scopus database
2-s2.0-85021897827