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Related papers: Comment on "Mass and K Lambda coupling of N*(1535)…

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New data from neutrino oscillation experiments motivate us to extend a successful mass relation for the charged leptons to the other fundamental fermions. This new universal relation requires a Dirac mass around 3 10^-2 eV for the lightest…

High Energy Physics - Phenomenology · Physics 2009-11-11 J. -M. Gerard , F. Goffinet , M. Herquet

We study the strong interaction S-wave \Lambda\pi phase shift in the region of the \Xi mass in the framework of a relativistic chiral unitary approach based on coupled channels. All parameters have been previously determined in a fit to…

High Energy Physics - Phenomenology · Physics 2009-10-31 Ulf-G. Meißner , José Antonio Oller

We investigate the $K \Lambda$ strong interaction dynamics around the energy region of $N^*(1535)$ resonance through femtoscopic correlation functions within the Koonin-Pratt formalism, where coupled-channel effects of $\pi N$, $K\Lambda$,…

High Energy Physics - Phenomenology · Physics 2025-05-15 Si-Wei Liu , Ju-Jun Xie

The sets of charged-lepton (L) and quark (D,U) masses may be parametrized in a Z_3-symmetric language appropriate for the discussion of Koide's formula. Experiment suggests that at the low-energy scale the relevant phase parameters \delta_f…

High Energy Physics - Phenomenology · Physics 2013-04-24 Piotr Zenczykowski

We have examined the existence of the $N^*(1685)$ resonance, which is recently listed by the Particle Data Group as a one-star nucleon resonance, by using a covariant isobar model for kaon photoproduction and assuming that the resonance has…

High Energy Physics - Phenomenology · Physics 2015-06-17 T. Mart

Using the heavy quark effective theory framework put forward by Grinstein and Pirjol we work out predictions for B -> K* l+ l-, l = (e, mu), decays for a softly recoiling K*, i.e., for large dilepton masses sqrt{q^2} of the order of the…

High Energy Physics - Phenomenology · Physics 2014-11-21 Christoph Bobeth , Gudrun Hiller , Danny van Dyk

The shift of the p-wave $D_s$ meson mass due to coupling to the DK channel is calculated without fitting parameters using the chiral Lagrangian. As a result the original $Q\bar q$ mass 2.490 MeV generically calculated in the relativistic…

High Energy Physics - Phenomenology · Physics 2008-11-26 Yu. A. Simonov , J. A. Tjon

The mechanism for the formation of the $\Lambda(1405)$ resonance is studied in a chiral quark model that includes quark-meson as well as contact (four point) interactions. The negative-parity $S$-wave scattering amplitudes for strangeness…

Nuclear Theory · Physics 2022-07-13 B. Golli , H. Osmanović , S. Širca

S-wave $K^-p$ scattering into various channels near threshold are analyzed in heavy-baryon chiral perturbation theory with $\Lambda (1405)$ introduced as an independent field. This is the approach that predicted the critical density…

High Energy Physics - Phenomenology · Physics 2015-06-25 Chang-Hwan Lee , Dong-Pil Min , Mannque Rho

Here we give our reply to the comment by Sibirtsev et al on our paper ``Mass and K-Lambda Coupling of the N*(1535)".

High Energy Physics - Phenomenology · Physics 2008-11-26 B. C. Liu , B. S. Zou

We apply Koide's mass relation of charged leptons to neutrinos and quarks, with both the normal and inverted mass schemes of neutrinos discussed. We introduce the parameters $k_{\nu}$, $k_u$ and $k_d$ to describe the deviations of neutrinos…

High Energy Physics - Phenomenology · Physics 2009-11-11 Nan Li , Bo-Qiang Ma

We investigate in-medium corrections to the branching ratio in K- absorption at rest and their effect on the (positively and negatively) charged pion spectrum. The in-medium corrections are due to Pauli blocking, which arises if the…

Nuclear Theory · Physics 2008-11-26 A. Ohnishi , Y. Nara , V. Koch

Results from a partial-wave analysis of the reaction $\gamma p \rightarrow K^+ \Lambda$ are presented. The reaction is dominated by the $S_{11}(1650)$ and $P_{13}(1720)$ resonances at low energies and by $P_{13}(1900)$ at higher energies.…

Nuclear Experiment · Physics 2019-05-29 B. C. Hunt , D. M. Manley

We derive a single-channel effective Kbar N interaction from chiral SU(3) coupled-channel dynamics, emphasizing the important role of the pi Sigma channel and the structure of the Lambda(1405) resonance. The chiral low energy theorem…

Nuclear Theory · Physics 2009-11-27 Tetsuo Hyodo , Wolfram Weise

The processes involving low energy $\bar{K}N$ and $Y\pi$ interactions (where $Y= \Sigma$ or $\Lambda$) are studied in the framework of heavy baryon chiral perturbation theory with the $\Lambda$(1405) resonance appearing as an independent…

Nuclear Theory · Physics 2008-11-26 B. Krippa , J. T. Londergan

We discuss in this talk aspects of \bar{K}N plus coupled channels dynamics with special emphasis on the \Lambda(1405) resonance and isovector resonances in the same energy region. We comment on several experimental reactions giving rise to…

Nuclear Theory · Physics 2015-06-17 J. A. Oller

We have studied the structure of K- pp nuclear cluster comprehensively by solving this three-body system exactly in a variational method starting from the Ansatz that the Lambda(1405) resonance (Lambda*) is a K-p bound state. We have found…

Nuclear Theory · Physics 2008-11-26 Toshimitsu Yamazaki , Yoshinori Akaishi

We study the gamma p ---> K^+ Lambda(1405) reaction at energies close to threshold using a chiral unitary model where the resonance is generated dynamically from K^-p interaction with other channels constructed from the octets of baryons…

Nuclear Theory · Physics 2009-10-31 J. C. Nacher , E. Oset , H. Toki , A. Ramos

A model is considered in which the scale of the heavy singlet neutrinos is a few orders of magnitude below the grand unification scale and where right-handed vector bosons play still a negligible role. In a basis with diagonal up-quark and…

High Energy Physics - Phenomenology · Physics 2011-02-01 Berthold Stech

A narrow baryon resonance is observed in invariant mass of the pKshort system formed in neutrino and antineutrino collisions with nuclei. The mass of the resonance is estimated as (1533+-5)MeV. The observed width is less than 20 MeV, and is…

High Energy Physics - Experiment · Physics 2008-11-26 A. E. Asratyan , A. G. Dolgolenko , M. A. Kubantsev