First Measurement of Near-Threshold J/ψ Exclusive Photoproduction off the Proton; Physical Review Letters; Vol. 123, iss. 7
| Parent link: | Physical Review Letters Vol. 123, iss. 7.— 2019.— [072001, 6 p.] |
|---|---|
| Körperschaft: | |
| Weitere Verfasser: | , , , |
| Zusammenfassung: | Title screen We 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). Режим доступа: по договору с организацией-держателем ресурса |
| Sprache: | Englisch |
| Veröffentlicht: |
2019
|
| Schlagworte: | |
| Online-Zugang: | https://doi.org/10.1103/PhysRevLett.123.072001 |
| Format: | xMaterials Elektronisch Buchkapitel |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=661243 |
MARC
| LEADER | 00000naa0a2200000 4500 | ||
|---|---|---|---|
| 001 | 661243 | ||
| 005 | 20251105144146.0 | ||
| 035 | |a (RuTPU)RU\TPU\network\31512 | ||
| 035 | |a RU\TPU\network\31487 | ||
| 090 | |a 661243 | ||
| 100 | |a 20191126d2019 k||y0rusy50 ba | ||
| 101 | 0 | |a eng | |
| 102 | |a US | ||
| 135 | |a drcn ---uucaa | ||
| 181 | 0 | |a i | |
| 182 | 0 | |a b | |
| 200 | 1 | |a First Measurement of Near-Threshold J/ψ Exclusive Photoproduction off the Proton |f A. Ali, M. J. Amaryan, V. V. Gauzshteyn, V. E. Lyubovitskiy (Lyubovitskij) | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 33 tit.] | ||
| 330 | |a We 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 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Physical Review Letters | ||
| 463 | |t Vol. 123, iss. 7 |v [072001, 6 p.] |d 2019 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a фотопродукция | |
| 610 | 1 | |a протоны | |
| 701 | 0 | |a Ali |b A. |g Arshad | |
| 701 | 1 | |a Amaryan |b M. J. |g Moskov | |
| 701 | 1 | |a Gauzshteyn (Gauzshtein) |b V. V. |c specialist in the field of nuclear engineering |c Researcher, Tomsk Polytechnic University, Candidate of Physical and Mathematical Sciences |f 1983- |g Vyacheslav Valerjevich |3 (RuTPU)RU\TPU\pers\35050 |9 18325 | |
| 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 | |
| 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 20200720 |g RCR | |
| 850 | |a 63413507 | ||
| 856 | 4 | |u https://doi.org/10.1103/PhysRevLett.123.072001 | |
| 942 | |c CF | ||