RT Journal Article T1 Chiral symmetry and hyperfine q(q)over-bar splittings A1 Llanes Estrada, Felipe José A1 Cotanch, Stephen R. A1 Szczepaniak, Adam P. A1 Swanson, Eric S. AB We review theoretical calculations for the pseudoscalar vector meson hyperfine splitting with no open flavor and also report a many body field theoretical effort to assess the impact of chiral symmetry in the choice of effective potentials for relativistic quark models. Our calculations predict the missing ηb meson to have mass near 9400 MeV . PB Springer-Verlag SN 1434-6044 YR 2004 FD 2004-03 LK https://hdl.handle.net/20.500.14352/50964 UL https://hdl.handle.net/20.500.14352/50964 LA eng NO 1. T. Appelquist et al.: Phys. Rev. Lett. 34, 365 (1975)2. E. Eichten et al.: Phys. Rev. Lett. 34, 369 (1975)3. H.J. Schnitzer: Phys. Rev. D 13, 74 (1975)4. S. Godfrey and N. Isgur: Phys. Rev. D 32, 184 (1985)5. R. McClary and N. Byars: Phys. Rev. D 28, 1692 (1983)6. E.J. Eichten and C. Quigg: hep-ph/94022107. K. Igi and S. Ono: Phys. Rev. D 33, 3349 (1986)8. A. Pineda and F.J. Yndurain: Phys. Rev. D 61, 077505 (2000)9. N. Brambilla, Y. Sumino, and A. Vairo: Phys. Lett. B 513, 381 (2001)10. H. Leutwyler: Phys. Lett. B 98, 447 (1981)11. C.T.H. Davies et al.: hep-lat/940601712. C.T.H. Davies et al.: hep-lat/980202413. P. Bicudo and J.E. Ribeiro: Z. Phys. C 38, 453 (1988)14. S.L. Adler and A.C. Davis: Nucl. Phys. B 244, 460 (1984) A. Le Yaouanc et al.: Phys. Rev. D 29, 1233 (1984); R. Alkofer and P.A. Amundsen: Nucl. Phys. B 306, 305 (1988); P. Bicudo and J.E. Ribeiro: Phys. Rev. D 42, 5 (1990); A.P. Szczepaniak and E.S. Swanson: Phys. Rev. D 55, 3987 (1997)15. A. Le Yaouanc et al.: Phys. Rev. D 31, 137 (1985)16. P. Bicudo and J.E. Ribeiro: Phys. Rev. D 42, 1625 (1990)17. F.J. Llanes-Estrada and S.R. Cotanch: Phys. Rev. Lett. 84, 1102 (2000); Nucl. Phys. A 697, 303 (2002)18. A.P. Szczepaniak and E.S. Swanson: Phys. Rev. Lett. 87, 072001 (2001)19. A.P. Szczepaniak, E.S. Swanson, C.R. Ji, and S.R. Cotanch: Phys. Rev. Lett. 76, 2011 (1996)20. F.J. Llanes-Estrada, S.R. Cotanch, A.P. Szczepaniak, and E.S. Swanson: manuscript in preparation21. A.P. Szczepaniak and E.S. Swanson: Phys. Rev. D 62, 094027 (2000)22. J.F. Lagae: Phys. Rev. D 45, 317 (1992)23. S. Godfrey and J.L. Rosner: hep-ph/0210399; S. Godfrey: hep-ph/0210400; M. Shapkin has reported at this conference on continuing searches with negative results so far24. S.-K. Choi et al. (BELLE collaboration): Phys. Rev. Lett. 89, 102001 (2002); erratum-ibid. 89 129901 (2002)25. V. Lengyel et al.: hep-ph/000708426. D. Ebert, R.N. Faustov, V.O. Galkin: Phys. Rev. D 62, 034014 (2000); hep-ph/0304227; hep ph/0308150 NO © Springer-Verlag / Societa` Italiana di Fisica 2003.This work was supported by Spanish grants FPA 2000- 0956, BFM 2002-01003 (F.L-E.) and the U. S. Department of Energy grants DE-FG02-97ER41048 (S.C.), DE-FG02- 87ER40365 (A.S.) and DE-FG02-00ER41135, DE-AC05- 84ER40150 (E.S.).International Europhysics Conference on High Energy Physics (2003. Aachen, Alemania) NO U. S. Department of Energy NO FPA Spain NO BFM Spain DS Docta Complutense RD 1 may 2024