| 000 | 03712nlm1a2200493 4500 | ||
|---|---|---|---|
| 001 | 660172 | ||
| 005 | 20231030041656.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\29156 | ||
| 090 | _a660172 | ||
| 100 | _a20190506a2018 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 135 | _aarnn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aSearch for muoproduction of X(3872) at COMPASS and indication of a new state X˜(3872) _fM. Aghasyan [et al.] |
|
| 203 |
_aText _celectronic |
||
| 300 | _aTitle screen | ||
| 320 | _a[References.: 46 tit.] | ||
| 330 | _aWe have searched for exclusive production of exotic charmonia in the reaction μ+N→μ+(J/ψπ+π−)π±N′ using COMPASS data collected with incoming muons of 160 GeV/c and 200 GeV/c momentum. In the J/ψπ+π− mass distribution we observe a signal with a statistical significance of 4.1 σ. Its mass and width are consistent with those of the X(3872). The shape of the π+π− mass distribution from the observed decay into J/ψπ+π− shows disagreement with previous observations for X(3872). The observed signal may be interpreted as a possible evidence of a new charmonium state. It could be associated with a neutral partner of X(3872) with C=−1 predicted by a tetraquark model. The product of cross section and branching fraction of the decay of the observed state into J/ψπ+π− is determined to be 71±28(stat)±39(syst) pb. | ||
| 461 | _tPhysics Letters B | ||
| 463 |
_tVol. 783 _v[P. 334-340] _d2018 |
||
| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aX (3872) | |
| 610 | 1 | _aphotoproduction | |
| 610 | 1 | _atetraquark | |
| 610 | 1 | _aexotic charmonia | |
| 610 | 1 | _aфотопродукция | |
| 610 | 1 | _aтетракварки | |
| 610 | 1 | _aчармоний | |
| 701 | 1 |
_aAghasyan _bM. _gMher |
|
| 701 | 1 |
_aAkhunzyanov _bRuslan _gR. R. |
|
| 701 | 1 |
_aBurtsev _bV. E. _cmathematician _cSenior Lecturer of Tomsk Polytechnic University _f1991- _gVitaly Evgenjevich _2stltpush _3(RuTPU)RU\TPU\pers\38282 |
|
| 701 | 1 |
_aChumakov _bA. G. _cphysicist _claboratory assistant-researcher of Tomsk Polytechnic University _f1992- _gAleksandr Grigorjevich _2stltpush _3(RuTPU)RU\TPU\pers\41079 |
|
| 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 |
|
| 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 |
|
| 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 |
|
| 701 | 1 |
_aMamon _bS. A. _cphysicist _claboratory assistant-researcher of Tomsk Polytechnic University _f1989- _gSergey Aleksandrovich _2stltpush _3(RuTPU)RU\TPU\pers\43559 |
|
| 701 | 1 |
_aVasilishin _bB. I. _cengineer-physicist _claboratory researcher at Tomsk Polytechnic University _f1990- _gBogdan Ivanovich _2stltpush _3(RuTPU)RU\TPU\pers\37572 |
|
| 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 _c20200124 _gRCR |
|
| 856 | 4 | _uhttp://earchive.tpu.ru/handle/11683/57550 | |
| 856 | 4 | _uhttps://doi.org/10.1016/j.physletb.2018.07.008 | |
| 942 | _cCF | ||