Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Nils A. Tornqvist"'
Publikováno v:
EPJ Web of Conferences, Vol 70, p 00024 (2014)
We discuss several highly accurate theoretical predictions for masses of baryons containing the b quark which have been recently confirmed by experimental data. Proper treatment of the color-magnetic hyperfine interaction in QCD is crucial for obtain
Autor:
Nils A. Tornqvist
Publikováno v:
Progress of Theoretical Physics Supplement. 168:178-185
The same, well known, detΣ + detΣ† term in effective theories, which ’t Hooft showed is generated by instantons in QCD and which resolves the UA(1) problem giving mass, in particular to the η′ is for three light flavors shown to give three c
Autor:
Nils A. Tornqvist
Publikováno v:
Physics Letters B. 619:145-148
After noting the well known similarity of the minimal electro-weak Higgs sector with the linear sigma model for the pion and the sigma, it is found that a small mixing term between the two models generates a pion mass. Although the custodial SU(2)L x
Autor:
P. Bloch, O. Schneider, B. Renk, W. G. Seligman, H. Jawahery, Oleg Zenin, Ariella Cattai, L. K. Gibbons, Mark Srednicki, H J Gerber, Victor Daniel Elvira, German Valencia, Robert N. Cahn, Suvra Sarkar, A. Edwards, G.H. Trilling, Ramon Miquel, Lincoln Wolfenstein, Jens Erler, Klaus Mönig, Otmar Biebel, J.L. Hewett, Paul Langacker, G. Höhler, S. B. Lugovsky, D. A. Edwards, Ken Ichi Hikasa, Tony Gherghetta, W-M. Yao, Michelangelo L. Mangano, Aneesh V. Manohar, Christoph Grab, Marco Battaglia, C. D. Carone, Kurtis F Johnson, Kaoru Hagiwara, Nils A. Tornqvist, Bryan R. Webber, G. Harper, Daniel Froidevaux, P A Zyla, Petr Vogel, S.I. Eidelman, D. Karlen, I.G. Knowles, Stuart Raby, E. L. Barberio, Helen R. Quinn, S. Sánchez Navas, Howard E. Haber, B. Armstrong, Torbjörn Sjöstrand, M. C. Goodman, B. N. Ratcliff, Meenakshi Narain, Craig J. Hogan, S. M. Spanier, K. Honscheid, George F. Smoot, Frederick J. Gilman, Marina Artuso, Koji Nakamura, H. Bichsel, P. Igo-Kemenes, Alan D. Martin, Manuella Vincter, Luc Pape, Masaharu Tanabashi, L. Garren, L.J. Rosenberg, S. R. Klein, John A. Peacock, G. Gerbier, John Terning, Hitoshi Murayama, Todor Stanev, N. J. C. Spooner, T. G. Trippe, M R Whalley, Claude Amsler, Y. Nir, D. Casper, Jonathan L. Feng, J. Womersley, K. Desler, M.A. Dobbs, K. van Bibber, D. M. Asner, B. Foster, H. Spieler, Orin I. Dahl, Thomas K. Gaisser, Masataka Fukugita, Manuel Drees, G. Conforto, C. A. Hagmann, Paolo Nason, D. M. Manley, Younghoon Kwon, Konrad Kleinknecht, John David Jackson, Yu V. Kuyanov, Kenneth G. Hayes, V. V. Ezhela, A. Piepke, C.T. Sachrajda, Brian D. Fields, A. I. Sanda, D. R. Ward, C. Patrignani, J. Beringer, Andrew R. Liddle, Michael Doser, P. S. Gee, A. Rom, Michael T Ronan, A. Stahl, B. Kayser, R. M. Barnett, E. A. Razuvaev, Thibault Damour, G. A. Cowan, Keith A. Olive, Ron L. Workman, Charles G Wohl, Georg G. Raffelt, D. E. Groom, M. Aguilar-Benitez, P. R. Burchat, M. H. Shaevitz, C. L. Woody, K. S. Lugovsky, D. Kirkby, C. Caso, Matts Roos, P. Kreitz, John March-Russell, R.S. Chivukula, N. P. Tkachenko, Gigi Rolandi, Douglas Scott, Christopher Kolda, Alberto Masoni, V. S. Lugovsky, Ren-Yuan Zhu, Michael Schmitt, W. Fetscher, Y. Sakai, M. Suzuki, Ian Hinchliffe, K. S. Babu, J.J. Hernández-Rey, Ofer Lahav, Giancarlo D'Ambrosio, Atul Gurtu, L. S. Littenberg
Publikováno v:
Physics Letters B. 592:31-88
Autor:
Nils A. Tornqvist
Publikováno v:
Physics Letters B. 590:209-215
The narrow charmonium state near 3872 MeV reported by the Belle collaboration and confirmedby CDF lies almost exactly at the neutral D anti-D* threshold. As was predicted many years ago it can be a deuteronlike meson-meson state called a deuson. If s
Autor:
Claude Amsler, Nils A. Tornqvist
Publikováno v:
Physics Reports. 389:61-117
We discuss theoretical predictions for the existence of exotic (non-quark-model) mesons and review prominent experimental candidates. These are especially the f0(1500) and f0(1710) mesons for the scalar glueball, fJ(2220) for the tensor glueball, η(
Autor:
Nils A. Tornqvist, Frank Close
Publikováno v:
Journal of Physics G: Nuclear and Particle Physics. 28:R249-R267
We show that two nonets and a glueball provide a consistent description of data on scalar mesons below 1.7 GeV. Above 1 GeV the states form a conventional (q bar q) nonet mixed with the glueball of lattice QCD. Below 1 GeV the states also form a none
Publikováno v:
Physics Letters B. 502:79-86
We examine the Ds→f0(980)π amplitude through a constituent quark–meson model, incorporating heavy quark and chiral symmetries, finding a good agreement with the recent E791 data analysis of Ds→3π via f0(980). The f0(980) resonance is consider
Publikováno v:
Physics Letters B. 494:168-174
We examine the D -> sigma pi amplitude through a constituent quark-meson model, incorporating heavy quark and chiral symmetries, finding a good agreement with the recent E791 data analysis of D -> 3 pi via sigma.
Autor:
Nils A. Tornqvist
Publikováno v:
The European Physical Journal C. 11:359-363
The linear \(\sigma\) model with broken \(U3 \times U3\) is compared with data of the lightest scalar and pseudoscalar mesons. When 5 of the 6 parameters are fixed by the pseudoscalar masses and decay constants, one finds that, already at the tree le