Strange hadron spectroscopy with the KLong facility at Jefferson lab


  • Sean Dobbs Florida State University



Hyperon spectroscopy, kaon spectroscopy, KLong Beam


 The strange quark hadrons sit at an important crossroads between the light and heavy quark hadrons, but their spectrum is comparatively poorly known. The KLF experiment was recently approved to run in Hall D of Jefferson Lab, and will use an intense secondary beam of KL mesons with the existing GlueX spectrometer to collect data several orders of magnitude larger than existing dataset. In this talk, I will discuss the expected physics reach of this experiment and the status of its preparations  


P.A. Zyla et al. [Particle Data Group], The Review of Particle Physics, Prog. Theor. Exp. Phys. 2020, 083C01 (2020) and 2021 update.

R. G. Edwards et al. [Hadron Spectrum Collaboration], Flavor structure of the excited baryon spectra from lattice QCD, Phys. Rev. D 87 (2013) 054506.

S. Capstick and N. Isgur, Baryons in a relativized quark model with chromodynamics, Phys. Rev. D 34 (1986) 2809.

S. Capstick and W. Roberts, Quark models of baryon masses and decays, Prog. Part. Nucl. Phys. 45 (2000) S241.

R. Koniuk and N. Isgur, Where Have All the Resonances Gone? An Analysis of Baryon Couplings in a Quark Model With Chromodynamics, Phys. Rev. Lett. 44 (1980) 845.

I. Vidana, Hyperons and neutron stars Nucl. Phys. A 914 (2013) 367; Hyperons in Neutron Stars, J. Phys. 668 (2016) 012031.

For example, A. Bazavov et al., Skewness, kurtosis, and the fifth and sixth order cumulants of net baryon-number distributions from lattice QCD confront high-statistics STAR data Phys. Rev. D 101 (2020) 074502.

M. Amaryan et al. [KLF Collaboration], Strange Hadron Spectroscopy with Secondary KL Beam in Hall D, arXiv:2008.08215

S. Adhikari [GlueX Collaboration], The GLUEX beamline and detector, Nucl. Instr. and Meth. A 987 (2021) 164807.

D. Day et al., [CPS Collaboration], A Conceptual Design Study of a Compact Photon Source (CPS) for Jefferson Lab, Nucl. Instrum. Meth. A 957 (2020) 163429.

I. Strakovsky et al., Conceptual Design of Beryllium Target for the KLF Project, arXiv:2002.04442[physics.ins-det].

M. Bashkanov et al., KL Flux Monitor, KLF Note, 2018, unpublished.

R. Yamartino et al., A Study of the Reactions K 0 p → Λπ + and K 0 p → Σ 0π + from 1 GeV/c to 12 GeV/c Phys. Rev. D10 (1974) 9 ; Ph. D Thesis, SLAC Stanford University, 1974; SLAC-R-0177, SLAC-R-177, SLAC-0177, SLAC-177.

P. Capiluppi, G. Giacomelli, G. Mandrioli, A. M. Rossi, P. Serra-Lugaresi, and L. Zitelli, A Compilation of K0 Lp Cross Sections, IFUB-81-25.

A. V. Sarantsev, The recent results in the analysis of the meson production reactions, EPJ Web Conf. 199, 01009 (2019); M. A. Matveev and A. Sarantsev, The Bonn-Gatchina analysis of the data from the Kp collision reactions PoS Hadron 2017 (2018) 069.

A. Sarantsev, Search for missing Sigma-hyperon states, talk at the KLF Collaboration meeting on Feb. 12, 2020, 12th, 2020.

C. M. Jenkins et al., Existence of Ξ Resonances Above 2 GeV Phys. Rev. Lett. 51 (1983) 951.

P. Estabrooks et al., Study of Kπ Scattering Using the Reactions K+ − p → K±π +n and K±p → K±π −∆++ at 13 GeV/c, Nucl. Phys. B 133 (1978) 490.

D. Aston et al., A Study of K−π + Scattering in the Reaction K−p → K−π +n at 11 GeV/c, Nucl. Phys. B 296 (1988) 493.

Y. Cho et al., Study of K−π − scattering using the reaction K−d → K−π −pps, Phys. Lett. B 32 (1970) 409.

A. M. Bakker et al., A determination of the I = 3/2 Kπ elastic-scattering cross section from the reaction K−n → pK−π − at 3 GeV/c, Nucl. Phys. B 24 (1970) 211.

D. Linglin et al., K−π − elastic scattering cross-section measured in 14.3 GeV/c K−p interactions, Nucl. Phys. B 57 (1973) 64.

B. Jongejans et al., Study of the I = 3/2 K−π − Elastic Scattering From the Reaction K−p → K−π −pπ+ at 4.25 GeV/c Incident K− Momentum, Nucl. Phys. B 67 (1973) 381.




How to Cite

Dobbs S. Strange hadron spectroscopy with the KLong facility at Jefferson lab. Supl. Rev. Mex. Fis. [Internet]. 2022 Jun. 8 [cited 2022 Dec. 7];3(3):0308032 1-6. Available from: