Rho decay width from the lattice

While the masses of light hadrons have been extensively studied in lattice QCD simulations, there exist only a few exploratory calculations of the strong decay widths of hadronic resonances. We will present preliminary results of a computation of the rho meson width obtained using

N_f=2+1

flavor simulations. The work is based on L\'uscher's formalism and its extension to moving frames.

rho(770): width
hadron: width
hadron: resonance
lattice field theory
lattice
flavor

References(15)

Figures(6)

Lattice QCD at the physical point: light quark masses

BMW

Collaboration

•

S. Durr
(
- Wuppertal U. and
- IAS, Julich
)

et al.

- Phys.Lett.B 701 (2011) 265-268
•
e-Print:
- 1011.2403
•
DOI:
- 10.1016/j.physletb.2011.05.053

Lattice QCD at the physical point: Simulation and analysis details

BMW

Collaboration

•

S. Durr
(
- Wuppertal U. and
- IAS, Julich
)

et al.

- JHEP 08 (2011) 148
•
e-Print:
- 1011.2711
•
DOI:
- 10.1007/JHEP08(2011)148

Scaling study for 2 HEX smeared fermions: hadron and quark masses

Budapest-Marseille-Wuppertal

Collaboration

•

Thorsten Kurth
(
- Wuppertal U.
)

et al.

- PoS LATTICE2010 (2010) 232
•
e-Print:
- 1011.1780
•
DOI:
- 10.22323/1.105.0232

The ratio FK/Fpi in QCD

BMW

Collaboration

•

S. Durr
(
- Wuppertal U. and
- Julich, Forschungszentrum
)

et al.

- Phys.Rev.D 81 (2010) 054507
•
e-Print:
- 1001.4692
•
DOI:
- 10.1103/PhysRevD.81.054507

Ab-Initio Determination of Light Hadron Masses

BMW

Collaboration

•

S. Durr
(
- NIC, Zeuthen and
- DESY, Zeuthen and
- Julich, Forschungszentrum
)

et al.

- Science 322 (2008) 1224-1227
•
e-Print:
- 0906.3599
•
DOI:
- 10.1126/science.1163233

Scaling study of dynamical smeared-link clover fermions

BMW

Collaboration

•

S. Durr
(
- NIC, Zeuthen and
- DESY, Zeuthen
)

et al.

- Phys.Rev.D 79 (2009) 014501
•
e-Print:
- 0802.2706
•
DOI:
- 10.1103/PhysRevD.79.014501

Volume Dependence of the Energy Spectrum in Massive Quantum Field Theories. 1. Stable Particle States

M. Luscher
(
- DESY
)

- Commun.Math.Phys. 104 (1986) 177,
- Commun. Math. Phys. 104 ( 1986) 177-206 and Hamburg Desy - DESY 85-144 (85,REC.FEB.86) 63p
•
DOI:
- 10.1007/BF01211589

Volume Dependence of the Energy Spectrum in Massive Quantum Field Theories. 2. Scattering States

M. Luscher
(
- DESY
)

- Commun.Math.Phys. 105 (1986) 153-188,
- Hamburg Desy - DESY 86-034 (86,REC.MAR.),
- Commun. Math. Phys. 105 ( 1986) 153-188 and Hamburg Desy - DESY 86-034 (86,REC.MAR.) 80p
•
DOI:
- 10.1007/BF01211097

How to Calculate the Elastic Scattering Matrix in Two-dimensional Quantum Field Theories by Numerical Simulation

Martin Luscher
(
- DESY
)
,
Ulli Wolff
(
- Kiel U. and
- Bielefeld U.
)

- Nucl.Phys.B 339 (1990) 222-252
•
DOI:
- 10.1016/0550-3213(90)90540-T

Two particle states on a torus and their relation to the scattering matrix

Martin Luscher
(
- DESY
)

- Nucl.Phys.B 354 (1991) 531-578
•
DOI:
- 10.1016/0550-3213(91)90366-6

Signatures of unstable particles in finite volume

Martin Luscher
(
- DESY
)

- Nucl.Phys.B 364 (1991) 237-251
•
DOI:
- 10.1016/0550-3213(91)90584-K

Resonance scattering on the lattice with nonzero total momentum

Steven A. Gottlieb
(
- Indiana U.
)
,
K. Rummukainen
(
- Indiana U.
)

- Nucl.Phys.B Proc.Suppl. 47 (1996) 819-822,
- Lattice 1995:0819-822,
- In *Melbourne 1995, Proceedings, Lattice '95* 819-822, and Indiana U. Bloomington - IUHET-317 (95,rec.Oct.) 4 p
•
e-Print:
- hep-lat/9509088
•
DOI:
- 10.1016/0920-5632(96)00182-X

Finite-volume effects for two-hadron states in moving frames

C.h. Kim
(
- Southampton U.
)
,
C.T. Sachrajda
(
- Southampton U.
)
,
Stephen R. Sharpe
(
- Southampton U. and
- Washington U., Seattle
)

- Nucl.Phys.B 727 (2005) 218-243
•
e-Print:
- hep-lat/0507006
•
DOI:
- 10.1016/j.nuclphysb.2005.08.029

Lattice QCD Calculation of the rho Meson Decay Width

CP-PACS

Collaboration

•

S. Aoki
(
- Tsukuba U., GSPAS and
- Tsukuba U. and
- Brookhaven
)

et al.

- Phys.Rev.D 76 (2007) 094506
•
e-Print:
- 0708.3705
•
DOI:
- 10.1103/PhysRevD.76.094506

On-shell improved lattice gauge theories

M. Luscher
(
- DESY
)
,
P. Weisz
(
- Hamburg U.
)

- Commun.Math.Phys. 98 (1985) 3, 433,
- Commun.Math.Phys. 97 (1985) 59,
- Commun.Math.Phys. 98 (1985) 433 (erratum)
•
DOI:
- 10.1007/BF01205792