| 000 | 02905nlm1a2200385 4500 | ||
|---|---|---|---|
| 001 | 652289 | ||
| 005 | 20231030041133.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\17553 | ||
| 090 | _a652289 | ||
| 100 | _a20161213a2016 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aUS | ||
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aIsospin-violating strong decays of scalar single-heavy tetraquarks _fTh. Gutsche [et al.] |
|
| 203 |
_aText _celectronic |
||
| 300 | _aTitle screen | ||
| 330 | _aWe present a study of the isospin-violating one-pion strong decays of single heavy tetraquarks XQ=X(sqq¯Q¯), Q=c, b, and q=u, d with spin-parity JP=0+. We assume that the tetraquarks have the configuration of a color diquark and an antidiquark. Three mechanisms of isospin violation can contribute to the decay rate: (1) mixing of the X(suu¯Q¯) and X(sdd¯Q¯) tetraquark currents, (2) an explicit md−mu quark mass difference in the quark diagrams describing the corresponding decay transitions, and (3) π0−η mixing in the final state. Our main results are as follows: (1) It is quite likely that the investigated tetraquark states are isosinglet states with a small admixture of an isotriplet component; (2) The first isospin-breaking mechanism affects the decay rather more significantly than the others; (3) Our calculations contain a size parameter ΛXQ, characterizing the distribution of the quarks in the tetraquark state XQ. Absolute decay rates depend very much on the choice of ΛXQ, varied from 1 to 2 GeV, reflecting the compactness of the multiquark system. | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 |
_tPhysical Review D _oparticles, fields, gravitation, and cosmology _d1970- |
||
| 463 |
_tVol. 94, iss. 9 _v[094012, 8 p.] _d2016 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aизоспин | |
| 610 | 1 | _aнарушение | |
| 610 | 1 | _aраспады | |
| 701 | 1 |
_aGutsche _bTh. _gThomas |
|
| 701 | 1 |
_aIvanov _bM. A. _gMikhail Alekseevich |
|
| 701 | 1 |
_aKorner _bJ. G. _gJurgen |
|
| 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 |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет (ТПУ) _bФизико-технический институт (ФТИ) _bКафедра высшей математики и математической физики (ВММФ) _h139 _2stltpush _3(RuTPU)RU\TPU\col\18727 |
| 801 | 2 |
_aRU _b63413507 _c20171122 _gRCR |
|
| 856 | 4 | _uhttps://doi.org/10.1103/PhysRevD.94.094012 | |
| 942 | _cCF | ||