| 000 | 02649nlm1a2200397 4500 | ||
|---|---|---|---|
| 001 | 661243 | ||
| 005 | 20231030041739.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\31512 | ||
| 035 | _aRU\TPU\network\31487 | ||
| 090 | _a661243 | ||
| 100 | _a20191126a2019 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aUS | ||
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aFirst Measurement of Near-Threshold J/ψ Exclusive Photoproduction off the Proton _fA. Ali, M. J. Amaryan, V. V. Gauzshteyn, V. E. Lyubovitskiy (Lyubovitskij) |
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| 203 |
_aText _celectronic |
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| 300 | _aTitle screen | ||
| 320 | _a[References: 33 tit.] | ||
| 330 | _aWe report on the measurement of the γp→J/ψp cross section from Eγ=11.8 GeV down to the threshold at 8.2 GeV using a tagged photon beam with the GlueX experiment. We find that the total cross section falls toward the threshold less steeply than expected from two-gluon exchange models. The differential cross section dσ/dt has an exponential slope of 1.67±0.39 GeV−2 at 10.7 GeV average energy. The LHCb pentaquark candidates P+c can be produced in the s channel of this reaction. We see no evidence for them and set model-dependent upper limits on their branching fractions B(P+c→J/ψp) and cross sections σ(γp→P+c)×B(P+c→J/ψp). | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 | _tPhysical Review Letters | ||
| 463 |
_tVol. 123, iss. 7 _v[072001, 6 p.] _d2019 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aфотопродукция | |
| 610 | 1 | _aпротоны | |
| 701 | 0 |
_aAli _bA. _gArshad |
|
| 701 | 1 |
_aAmaryan _bM. J. _gMoskov |
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| 701 | 1 |
_aGauzshteyn _bV. V. _cspecialist in the field of nuclear engineering _cengineer at Tomsk Polytechnic University _f1983- _gVyacheslav Valerjevich _2stltpush _3(RuTPU)RU\TPU\pers\35050 |
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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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| 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 _c20200720 _gRCR |
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| 856 | 4 | _uhttps://doi.org/10.1103/PhysRevLett.123.072001 | |
| 942 | _cCF | ||