Test of the multiquark structure of a1(1420) in strong two-body decays
| Parent link: | Physical Review D: particles, fields, gravitation, and cosmology.— , 1970- Vol. 96, iss. 11.— 2017.— [114004, 10 p.] |
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| Yhteisötekijä: | |
| Muut tekijät: | , , , , |
| Yhteenveto: | Title screen We present an analysis of strong two-body decays of the a1(1420) with JPC=1++ recently reported by the COMPASS Collaboration at CERN. Following the interpretation of the COMPASS Collaboration that the a1 is an unusual state with a four-quark q¯qs¯s structure we consider two possible configurations for this state-hadronic molecular and color diquark-antidiquark structures. We find that the dominant decay mode of the a1 is the decay into K and K∗. In particular, we calculate that the four decay modes a1→VP with VP=K*±K∓, K*0¯K0, ¯K*0K0 together give a dominant contribution to the measured total width of about 150 MeV. The observational mode a1→f0(980)+π0 is significantly suppressed by one order of magnitude. Режим доступа: по договору с организацией-держателем ресурса |
| Kieli: | englanti |
| Julkaistu: |
2017
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| Aiheet: | |
| Linkit: | https://doi.org/10.1103/PhysRevD.96.114004 |
| Aineistotyyppi: | Elektroninen Kirjan osa |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=658077 |
MARC
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| 200 | 1 | |a Test of the multiquark structure of a1(1420) in strong two-body decays |f T. Gutsche [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 24 tit.] | ||
| 330 | |a We present an analysis of strong two-body decays of the a1(1420) with JPC=1++ recently reported by the COMPASS Collaboration at CERN. Following the interpretation of the COMPASS Collaboration that the a1 is an unusual state with a four-quark q¯qs¯s structure we consider two possible configurations for this state-hadronic molecular and color diquark-antidiquark structures. We find that the dominant decay mode of the a1 is the decay into K and K∗. In particular, we calculate that the four decay modes a1→VP with VP=K*±K∓, K*0¯K0, ¯K*0K0 together give a dominant contribution to the measured total width of about 150 MeV. The observational mode a1→f0(980)+π0 is significantly suppressed by one order of magnitude. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Physical Review D |o particles, fields, gravitation, and cosmology |d 1970- | ||
| 463 | |t Vol. 96, iss. 11 |v [114004, 10 p.] |d 2017 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a тетракварки | |
| 610 | 1 | |a анализ | |
| 610 | 1 | |a распад | |
| 701 | 1 | |a Gutsche |b T. |g Thomas | |
| 701 | 1 | |a Ivanov |b M. A. |g Mikhail | |
| 701 | 1 | |a Korner |b J. G. |g Jurgen | |
| 701 | 1 | |a Lyubovitskiy (Lyubovitskij) |b V. E. |c physicist |c Professor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences, Professor of the University of Tubingen (Germany) |f 1963- |g Valery Efimovich |3 (RuTPU)RU\TPU\pers\33385 |9 17080 | |
| 701 | 0 | |a Xu Kai | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Исследовательская школа физики высокоэнергетических процессов |c (2017- ) |3 (RuTPU)RU\TPU\col\23551 |
| 801 | 2 | |a RU |b 63413507 |c 20180515 |g RCR | |
| 856 | 4 | |u https://doi.org/10.1103/PhysRevD.96.114004 | |
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