| 000 | 04642nlm1a2200457 4500 | ||
|---|---|---|---|
| 001 | 660209 | ||
| 005 | 20231030041657.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\29240 | ||
| 035 | _aRU\TPU\network\28997 | ||
| 090 | _a660209 | ||
| 100 | _a20190513a2018 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aUS | ||
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aLight isovector resonances in π−p→π−π−π+p at 190 GeV/c _fM. Aghasyan [et al.] |
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| 203 |
_aText _celectronic |
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| 300 | _aTitle screen | ||
| 320 | _a[References: 117 tit.] | ||
| 330 | _aWe have performed the most comprehensive resonance-model fit of π−π−π+ states using the results of our previously published partial-wave analysis (PWA) of a large data set of diffractive-dissociation events from the reaction π−+p→π−π−π++precoil with a 190 GeV/c pion beam. The PWA results, which were obtained in 100 bins of three-pion mass, 0.5<m3π<2.5 GeV/c2, and simultaneously in 11 bins of the reduced four-momentum transfer squared, 0.1<t′<1.0 (GeV/c)2, are subjected to a resonance-model fit using Breit-Wigner amplitudes to simultaneously describe a subset of 14 selected waves using 11 isovector light-meson states with JPC=0−+, 1++, 2++, 2−+, 4++, and spin-exotic 1−+quantum numbers. The model contains the well-known resonances π(1800), a1(1260), a2(1320), π2(1670), π2(1880), and a4(2040). In addition, it includes the disputed π1(1600), the excited states a1(1640), a2(1700), and π2(2005), as well as the resonancelike a1(1420). We measure the resonance parameters mass and width of these objects by combining the information from the PWA results obtained in the 11 t′ bins. We extract the relative branching fractions of the ρ(770)π and f2(1270)πdecays of a2(1320) and a4(2040), where the former one is measured for the first time. In a novel approach, we extract the t′ dependence of the intensity of the resonances and of their phases. The t′dependence of the intensities of most resonances differs distinctly from the t′ dependence of the nonresonant components. For the first time, we determine the t′ dependence of the phases of the production amplitudes and confirm that the production mechanism of the Pomeron exchange is common to all resonances. We have performed extensive systematic studies on the model dependence and correlations of the measured physical parameters. | ||
| 461 |
_tPhysical Review D _ocovering particles, fields, gravitation, and cosmology |
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| 463 |
_tVol. 98, iss. 9 _v[092003, 72 p.] _d2018 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aрезонансные модели | |
| 610 | 1 | _aмезоны | |
| 610 | 1 | _aрезонансы | |
| 701 | 1 |
_aAghasyan _bM. _gMher |
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| 701 | 1 |
_aBurtsev _bV. E. _cmathematician _cSenior Lecturer of Tomsk Polytechnic University _f1991- _gVitaly Evgenjevich _2stltpush _3(RuTPU)RU\TPU\pers\38282 |
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| 701 | 1 |
_aChumakov _bA. G. _cphysicist _claboratory assistant-researcher of Tomsk Polytechnic University _f1992- _gAleksandr Grigorjevich _2stltpush _3(RuTPU)RU\TPU\pers\41079 |
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| 701 | 1 |
_aDusaev _bR. R. _cspecialist in the field of nuclear physics _cEngineer of Tomsk Polytechnic University _f1988- _gRenat Ramilyevich _2stltpush _3(RuTPU)RU\TPU\pers\30972 |
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| 701 | 1 |
_aLevchenko _bE. A. _cmathematician _ctechnician, Senior Lecturer of Tomsk Polytechnic University, candidate of physico-mathematical Sciences _f1988- _gEvgeny Anatolievich _2stltpush _3(RuTPU)RU\TPU\pers\31735 |
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| 701 | 1 |
_aLyubovitskiy (Lyubovitskij) _bV. E. _cphysicist _cProfessor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences, Professor of the University of Tubingen (Germany) _f1963- _gValery Efimovich _2stltpush _3(RuTPU)RU\TPU\pers\33385 |
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| 701 | 1 |
_aMamon _bS. A. _cphysicist _claboratory assistant-researcher of Tomsk Polytechnic University _f1989- _gSergey Aleksandrovich _2stltpush _3(RuTPU)RU\TPU\pers\43559 |
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| 701 | 1 |
_aVasilishin _bB. I. _cengineer-physicist _claboratory researcher at Tomsk Polytechnic University _f1990- _gBogdan Ivanovich _2stltpush _3(RuTPU)RU\TPU\pers\37572 |
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| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет _bИсследовательская школа физики высокоэнергетических процессов _c(2017- ) _h8118 _2stltpush _3(RuTPU)RU\TPU\col\23551 |
| 801 | 2 |
_aRU _b63413507 _c20220207 _gRCR |
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| 856 | 4 | _uhttp://earchive.tpu.ru/handle/11683/57554 | |
| 856 | 4 | _uhttps://doi.org/10.1103/PhysRevD.98.092003 | |
| 942 | _cCF | ||