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We present preliminary results on the $I=0$, $S=-2$ $H$ dibaryon in $N_{\rm f}=2+1$ QCD. The calculation is performed with heavier-than-physical quarks ($m_\pi \approx 280$ MeV) on a single CLS ensemble. Correlation matrices are constructed…

The baryon-baryon interactions for the complete baryon octet (B_8) are investigated in a unified framework of the resonating-group method, in which the spin-flavor SU_6 quark-model wave functions are employed. Model parameters are…

核理论 · 物理学 2009-11-07 Y. Fujiwara , M. Kohno , C. Nakamoto , Y. Suzuki

We describe an efficient algorithm to compute a large number of baryon-baryon interactions from $NN$ to $\Xi\Xi$ by means of HAL QCD method, which lays the groundwork for the nearly physical point lattice QCD calculation with volume…

At the Large Hadron Collider it is possible to generate BSQ (baryon, strangeness, and electric) charge density fluctuations from gluon splittings into quark/anti-quark pairs, generated within the ICCING model. In this work, we implement BSQ…

We construct several classes of hadronic matrix elements and relate them to the low-energy constants in Chiral Perturbation Theory that describe the electromagnetic effects in the semileptonic beta decay of the pion and the kaon. We propose…

高能物理 - 格点 · 物理学 2020-10-29 Chien-Yeah Seng , Xu Feng , Mikhail Gorchtein , Lu-Chang Jin , Ulf-G. Meißner

Using the one-boson-exchange model, we investigate the interactions between the doubly charmed baryon $\Xi_{cc}(3621)$ and the $S-$wave (anti-)kaon accounting for the $S-D$ wave mixing and coupled-channel effects. We find the coupled…

高能物理 - 唯象学 · 物理学 2024-10-01 Li-Cheng Sheng , Jin-Yu Huo , Rui Chen , Fu-Lai Wang , Xiang Liu

The long-range, parity-odd nucleon interaction generated by single pion exchange is captured in the parity-odd pion-nucleon coupling $h^1_\pi$. Its calculation in lattice QCD requires the evaluation of 4-quark operator nucleon 3-point…

高能物理 - 格点 · 物理学 2023-11-30 Marcus Petschlies , Nikolas Schlage , Aniket Sen , Carsten Urbach

We present the first Dyson-Schwinger equation calculation of the light hadron spectrum that simultaneously correlates the masses of meson and baryon ground- and excited-states within a single framework. At the core of our analysis is a…

核理论 · 物理学 2011-05-09 H. L. L. Roberts , L. Chang , I. C. Cloet , C. D. Roberts

Baryon masses at varying values of Nc and light quark masses are studied with Lattice QCD and the results are analyzed in a low energy effective theory based on a combined framework of the 1/Nc and Heavy Baryon Chiral Perturbation Theory…

高能物理 - 唯象学 · 物理学 2014-07-23 A. Calle Cordon , T. DeGrand , J. L. Goity

We calculate the T-matrices of kaon-nucleon ($KN$) and antikaon-nucleon ($\overline{K}N$) scattering to one-loop order in SU(3) heavy baryon chiral perturbation theory (HB$\chi$PT). The low-energy constants (LECs) and their combinations are…

核理论 · 物理学 2017-01-20 Bo-Lin Huang , Yun-De Li

Dynamics of hadro-quarkonium system is formulated, based on the channel coupling of a light hadron (h) and heavy quarkonium (Q\bar{Q}) to intermediate open-flavor heavy-light mesons (Q\bar{q}, \bar{Q}q). The resulting effective interaction…

高能物理 - 唯象学 · 物理学 2014-01-21 I. V. Danilkin , V. D. Orlovsky , Yu. A. Simonov

An analysis is presented of the ground state baryon's (N and \Delta) masses and axial couplings in the combined 1/Nc and chiral expansions. Renormalization and alternative power counting schemes are discussed to one loop (NNLO). An…

高能物理 - 唯象学 · 物理学 2012-09-04 A. Calle Cordon , J. L. Goity

The interactions of charm and bottom quarks in a Quark-Gluon Plasma (QGP) are evaluated using a thermodynamic 2-body T-matrix. We specifically focus on heavy-quark (HQ) interactions with thermal gluons with an input potential motivated by…

高能物理 - 唯象学 · 物理学 2015-06-05 Kyle Huggins , Ralf Rapp

We calculate the effective potentials of the octet baryon and heavy meson systems using the chiral effective field theory up to the next-to-leading order. We consider the contact terms, one-pseudoscalar-meson and two-pseudoscalar-meson…

高能物理 - 唯象学 · 物理学 2024-12-12 Bo-Lin Huang , Bo Wang , Shi-Lin Zhu

We evaluate interhadron interactions in two-color lattice QCD from Bethe-Salpeter amplitudes on the Euclidean lattice. The simulations are performed in quenched SU(2) QCD with the plaquette gauge action at $\beta = 2.45$ and the Wilson…

高能物理 - 格点 · 物理学 2010-12-21 Toru T. Takahashi , Yoshiko Kanada-En'yo

I report recent developments on hadron interactions in lattice QCD by the HAL QCD method. As an introduction, I summarize the lattice community's consensus on the absence of the deeply bound dinucleons at heavier pion masses. We then…

高能物理 - 格点 · 物理学 2025-03-03 Sinya Aoki

We present results for the interaction of two kaons at maximal isospin. The calculation is based on $N_f=2+1+1$ flavour gauge configurations generated by the European Twisted Mass Collaboration with pion masses ranging from about $230$ to…

We provide, for non-experts, a brief overview of holographic QCD and a review of a recent proposal of matrix-description of multi-baryon systems in holographic QCD. Based on the matrix model, we derive the baryon interaction at short…

高能物理 - 理论 · 物理学 2015-06-04 Sinya Aoki , Koji Hashimoto , Norihiro Iizuka

We extend the study of hadron yield correlation in combination models in a recent publication to baryon-anti-baryon flavor correlations in heavy ion collisions. We show that the universal behaviors of the anti-baryon to baryon yield ratios…

高能物理 - 唯象学 · 物理学 2014-08-06 Rui-qin Wang , Feng-lan Shao , Zuo-tang Liang

The effective quark interaction in a relativistically covariant constituent quark model based on the Salpeter equation is supplemented by an extra phenomenological flavour dependent force in order to account for some discrepancies mainly in…

高能物理 - 唯象学 · 物理学 2012-01-12 Michael Ronniger , Bernard Ch. Metsch