Перейти к основному содержанию
AkademIndex

Продукты

Для разработчиков

AkademBaseОткрытый API экосистемы
Статья

Light baryon resonances from a coupled-channel study including $$\mathbf {K\Sigma }$$ photoproduction

D. RönchenInstitute for Advanced Simulation and Jülich Center for Hadron Physics, Forschungszentrum Jülich, 52425, Jülich, GermanyM. DöringInstitute for Nuclear Studies and Department of Physics, The George Washington University, Washington, DC, 20052, USAUlf-G. MeißnerHelmholtz-Institut für Strahlen- und Kernphysik (Theorie) and Bethe Center for Theoretical Physics, Universität Bonn, 53115, Bonn, GermanyChao-Wei ShenInstitute for Advanced Simulation and Jülich Center for Hadron Physics, Forschungszentrum Jülich, 52425, Jülich, Germany
2022en
ABI

Аннотация

Abstract The Jülich-Bonn dynamical coupled-channel approach is extended to include $$K\Sigma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>K</mml:mi> <mml:mi>Σ</mml:mi> </mml:mrow> </mml:math> photoproduction off the proton. Differential cross section and (double) polarization data for $$K^+\Sigma ^0$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msup> <mml:mi>K</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:msup> <mml:mi>Σ</mml:mi> <mml:mn>0</mml:mn> </mml:msup> </mml:mrow> </mml:math> and $$K^0\Sigma ^+$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msup> <mml:mi>K</mml:mi> <mml:mn>0</mml:mn> </mml:msup> <mml:msup> <mml:mi>Σ</mml:mi> <mml:mo>+</mml:mo> </mml:msup> </mml:mrow> </mml:math> are analysed simultaneously with the pion- and photon-induced production of $$\pi N$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>π</mml:mi> <mml:mi>N</mml:mi> </mml:mrow> </mml:math> , $$\eta N$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>η</mml:mi> <mml:mi>N</mml:mi> </mml:mrow> </mml:math> , $$K\Lambda $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>K</mml:mi> <mml:mi>Λ</mml:mi> </mml:mrow> </mml:math> , and $$K\Sigma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>K</mml:mi> <mml:mi>Σ</mml:mi> </mml:mrow> </mml:math> final states, totaling almost 72,000 data points for center-of-mass energies $$W&lt;2.4$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>W</mml:mi> <mml:mo>&lt;</mml:mo> <mml:mn>2.4</mml:mn> </mml:mrow> </mml:math> GeV. Based on the fit results the spectrum of $$N^*$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>N</mml:mi> <mml:mo>∗</mml:mo> </mml:msup> </mml:math> and $$\Delta $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>Δ</mml:mi> </mml:math> resonances is extracted in terms of pole positions and residues. We discuss the impact of the $$\gamma p\rightarrow K\Sigma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>γ</mml:mi> <mml:mi>p</mml:mi> <mml:mo>→</mml:mo> <mml:mi>K</mml:mi> <mml:mi>Σ</mml:mi> </mml:mrow> </mml:math> channels in detail and investigate the influence of recent polarization data for $$\eta p$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>η</mml:mi> <mml:mi>p</mml:mi> </mml:mrow> </mml:math> photoproduction.

Перевод пока недоступен

Идентификаторы

Цитирования и источники

Цитирований: 2Использованных источников: 0