1 / 24

Meson spectroscopy with unitary coupled-channels model

Meson spectroscopy with unitary coupled-channels model . Satoshi Nakamura Excited Baryon Analysis Center ( EBAC), JLab. Collaborators : H. Kamano (RCNP), T.-S.H. Lee (ANL), T. Sato (Osaka U). Why hadron spectroscopy ?. How. J PC , s pectrum, d ecay pattern key information

dean
Télécharger la présentation

Meson spectroscopy with unitary coupled-channels model

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Meson spectroscopy with unitary coupled-channels model Satoshi Nakamura Excited Baryon Analysis Center (EBAC), JLab Collaborators: H. Kamano (RCNP), T.-S.H. Lee (ANL), T. Sato (Osaka U)

  2. Why hadron spectroscopy ? How JPC , spectrum, decay pattern key information Quark-gluon dynamics (QCD) in non-perturbative regime Partial wave analysis (PWA) Reliable analysis tool needed ! Data

  3. Analysis ofthree-meson productionse.g., E852 (BNL) p pppp pChung et al., PRD 65, 072001 (2001) isobar model * ppsubsystem forms a resonance * 3rd p is a spectator

  4. Question Unitarity ? Coupled-channels ?

  5. 3-body unitarity requires … Z-diagrams

  6. Question to be addressed How 3-body unitarity makes a difference in extracting hadron properties from data ? Method 1. Construct a unitary and an isobar models 2. Fit them to the same Dalitz plot 3. Extract and compareM*properties from them (pole position, coupling strength to decay channels)

  7. ppmodel Coupled-channels eq. for ppscattering (L ,I )  Fitted to data

  8. Coupling strength to decay channels Unitary model Isobar model

  9. Coupling strength to decay channels p2(1670) r pf2p0 W=1 GeV W=1.66 GeV a1(1230) f0 p0r p [degree] Unitary Isobar

More Related