High-precision measurements of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>π</mml:mi><mml:mi>p</mml:mi></mml:mrow></mml:math>elastic differential cross sections in the second resonance region

Alekseev, I.; Andreev, V. A.; Bordyuzhin, I. G.; Briscoe, W. J.; Filimonov, Ye. A.; Golubev, V. V.; Gridnev, A.; Kalinkin, D. V.; Koroleva, L. I.; Kozlenko, N.; Kozlov, V.; Krivshich, A.; Morozov, B. V.; Nesterov, V. M.; Novinsky, D. V.; Ryltsov, V.; Sadler, M. E.; Shurygin, Boris; Strakovsky, I. I.; Sulimov, A. D.; Sumachev, V. V.; Svirida, D. N.; Тараканов, В. И.; Trautman, V. Yu.; Workman, R. L.

doi:10.1103/physrevc.91.025205

Cited by 10 publications

(1 citation statement)

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“…The signal of its isospin partners was claimed to be present in the γN → ηπN by Graal [63], however, it was not confirmed by CBELSA/TAPS [64] and A2@MAMI groups [65,66]. Together with this state, a narrow structure at 1720 MeV close to ωp threshold was also observed in γp → γp [67], quasifree γn → ηn [38] and high-precision πp elastic data from EPECUR Collaboration [68,69]. Whether these states correlate with each other is under investigation.…”

Section: Introductionmentioning

confidence: 99%

Photo- and electro-production of narrow exotic states: from light quarks to charm and up to bottom

Xu¹

2023

Preprint

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Accessing a full image of the inner content of hadrons represents a central endeavour of modern particle physics, with the main scientific motivation to investigate the strong interaction binding the visible matter. On the one hand, the structure of known exotic candidates is a fundamental open issue addressed widely by scientists. On the other hand, looking for new states of exotic nature is a central component for theoretical and experimental efforts from electron-positron machine and electron accelerator with fixed target to heavy ion and electron-ion colliders. In this article we present a succinct short overview of the attempt to search for exotic narrow N * and Z states containing light quarks only or also charm, and its connotation for bottom regions (the latter two are also known as P c (Z c ) and P b (Z b ) states, respectively in the literature). We address the effort of searching for exotic narrow N * and Z states in light quark sector. We focus on recent progress in searching for signal of P c and Z c states photoproduction and its implication into the P b and Z b photoproduction and their decay properties. We also discuss future perspectives for the field in electron-ion colliders, a good place to disentangle the nature of some of these states and investigate some other enlightening topics including QCD trace anomaly and quarkonium-nucleon scattering length.

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Section: Introductionmentioning

confidence: 99%

Photo- and electro-production of narrow exotic states: from light quarks to charm and up to bottom

Xu¹

2023

Preprint

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Photo- and electro-production of narrow exotic states: From light quarks to charm and up to bottom

Cao

2023

Front. Phys.

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Compton scattering off proton in the third resonance region

Cao

Lenske

2017

Physics Letters B

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Compton scattering off the proton in the third resonance region is analyzed for the first time, owing to the full combined analysis of pion- and photo-induced reactions in a coupled-channel effective Lagrangian model with K-matrix approximation. Two isospin $I=3/2$ resonances $D_{33}(1700)$ and $F_{35}(1930)$ are found to be essential in the range of 1.6 - 1.8 GeV. The recent beam asymmetry data of Compton scattering from the GRAAL facility are used to determine the helicity couplings of these resonances, and strong constraints are coming also from $\pi N$ and $K\Sigma$ photoproduction data. The possible spin and parity of new narrow resonances is discussed.Comment: 7 pages, 2 figs, 2 tabs, publish versio

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High-precision measurements ofπpelastic differential cross sections in the second resonance region

Cited by 10 publications

References 266 publications

Photo- and electro-production of narrow exotic states: from light quarks to charm and up to bottom

Photo- and electro-production of narrow exotic states: from light quarks to charm and up to bottom

Photo- and electro-production of narrow exotic states: From light quarks to charm and up to bottom

Compton scattering off proton in the third resonance region

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