New data on the p + N → [Σ0K+] + N reaction at E p= 70 GeV and the search for exotic baryons

Golovkin, S.V.; Кожевников, А. П.; Kubarovsky, V.; Kurshetsov, V. F.; Landsberg, L.G.; Molchanov, V. V.; Mukhin, V.A.; Petrenko, S. V.; Senko, V.A.; Vavilov, D. V.; Victorov, V.A.; Kolganov, V.Z.; Lomkatsi, G.S.; Nilov, A.F.; Smolyankin, V.

doi:10.1007/s100500050304

Cited by 8 publications

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“…However, there are almost no results for light pentaquarks. From 1994-1999, experiments using the SPHINX spectrometer reported a resonance structure as a candidate for the state in the proton diffractive reactions [18][19][20][21]. Although the extracted resonance had fairly poor statistics, it inspired several theoretical studies on the existence of hidden-strange pentaquarks.…”

Section: Introductionmentioning

confidence: 99%

QCD sum rule study for hidden-strange pentaquarks*

Yang

Chen

2023

Chinese Phys. C

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Inspired by the LHCb's observations of hidden-charm $P_{c(s)}$ states, we study their hidden-strange analogues $P_s$ states in both $[udu][\bar ss]$ and $[uds][\bar su]$ configurations. We investigate the $P_s$ pentaquark states in $p\eta^\prime$, $p\phi$, $\Lambda K$, $\Sigma K$ and $\Sigma^\ast K^\ast$ structures with $J^P = \frac{1}{2}^-$ and $\Sigma ^\ast K$ and $\Sigma K^\ast$ with $J^P = \frac{3}{2}^-$, and calculate their masses in the framework of QCD sum rules. Our numerical results show that the extracted hadron masses for all the $p\eta^\prime$, $p\phi$, $\Lambda K$, $\Sigma K$ and $\Sigma^\ast K^\ast$ structures are much higher than $\Sigma K$ mass threshold and masses for $\Sigma ^\ast K$ and $\Sigma K^\ast$ also higher than threshold of corresponding hadron, so that no bound state exists in such channels, which is consistent with the experimental status to date.Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.

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Section: Introductionmentioning

confidence: 99%

QCD sum rule study for hidden-strange pentaquarks*

Yang

Chen

2023

Chinese Phys. C

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“…Actually, the study for existence of hidden-strange pentaquark is much earlier than the observations of the P c states. In 1994-1999, the experiments with the SPHINX spectrometer reported a resonance structure X(2000) as a candidate of ssuud state in the proton diffractive reactions p+N (C) → X(Σ 0 K + )+N (C) [11][12][13][14]. Although the resonance extracted had fairly poor statistics, it still inspired some theoretical studies for the existence of the hidden-strange pentaquarks.…”

Section: Introductionmentioning

confidence: 99%

QCD sum rule study for hidden-strange pentaquarks

Yang,

Chen

2022

Preprint

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Inspired by the LHCb's observations of hidden-charm P c(s) states, we study their hidden-strange analogues Ps states in both [udu][ss] and [uds][su] configurations. We investigate the Ps pentaquark states in pη ′ , pφ, ΛK, ΣK and Σ * K * structures with J P = 1 2 − and calculate their masses in the framework of QCD sum rules. Our numerical results can not exclude the possibility of the pφ bound state. For the pη ′ , ΣK and Σ * K * channels, the extracted hadron masses are much higher than the two-hadron thresholds so that no bound state exists in such structures, which is consistent with the experimental status to date.

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“…The origin of these structures is uncertain, they need further study and confirmation in other experiments. The status of the study of some of these structures can be found in [27,28,29,30].…”

Section: Introductionmentioning

confidence: 99%