Jun 13 – 17, 2011
Europe/Berlin timezone
Proceedings are now available online at <a href="http://www.slac.stanford.edu/econf/C110613/">eConf</a>

Does the I = 1 State exist in c cbar meson?

Jun 13, 2011, 5:50 PM
Club 1 (Künstlerhaus)

Club 1


talk Quarkonia Quarkonia


Dr Hiroshi Noya (Institute of Physics, Hosei University at Tama)


Hiroshi Noya Institute of Physics, Hosei University at Tama Machida, Tokyo 194-0298, Japan e-mail : hiroshinoya@yahoo.com and Hiroshi Nakamura Department of Physics and Mathematics, College of Science and Engineering Aoyamagakuin University, Fuchinobe, Sagamihara, Kanagawa 229-8558, Japan We present the mass formula of the Diquark Cluster Model (DCM) to calculate the q2qbar2 system for the c cbar mesons with the u, d, s and c quarks. All parameters in the mass formula are already fixed to the analyses of the mass spectrum for the meson 1) except for c quark mass and related spin parameters. Using the Charmed baryons mass, we obtained these parameters. We calculated the mass of X(3945) to X(4660) c cbar mesons. The difference between the calculated mass and the experimental ones are less than 40 Mev. The following examples are our results. c n cbar nbar configurations. X(4260) : 4259 MeV. ; Exp. : 4263 MeV. X(4430) : 4407 MeV. ; Exp. : 4443 MeV. c s cbar sbar configuration. X(4350) : 4334 MeV. ; Exp. : 4350 MeV. From our calculation, we conclude that the X (3940) to X (4660) c cbar mesons is the four quark states. 1) Y.Uehara, N.Konno, H.Nakamura and H.Noya: Nucl. Phys. A606 (1996) 357

Primary author

Dr Hiroshi Noya (Institute of Physics, Hosei University at Tama)

Presentation materials