The sigma pole in J / psi ---> omega pi+ pi- - INSPIRE

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The sigma pole in J / psi ---> omega pi+ pi-

BES

Collaboration

•

M. Ablikim

Jun, 2004

15 pages

Published in:

Phys.Lett.B 598 (2004) 149-158

e-Print:

hep-ex/0406038 [hep-ex]

DOI:

10.1016/j.physletb.2004.07.052

PDG:

{{\mathit f}_{{{0}}}{(500)}}

\sqrt {\mathit s }

Experiments:

BEPC-BES

View in:

ADS Abstract Service

reference search269 citations

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Abstract: (Elsevier)

Using a sample of 58 million J/ψ events recorded in the BESII detector, the decay J/ψ→ωπ+π− is studied. There are conspicuous ωf2(1270) and b1(1235)π signals. At low ππ mass, a large, broad peak due to the σ is observed, and its pole position is determined to be (541±39)−i(252±42) MeV from the mean of six analyses. The errors, which are dominated by the systematic errors, cover the statistical and systematic errors in the six analyses, as well as the observed variation of the six analyses.

Note:

15 pages, 6 figures, submitted to PLB

13.40.Hq
13.25.Gv
14.40.Gx
electron positron: colliding beams
electron positron: annihilation
J/psi(3100): electroproduction
J/psi(3100): hadronic decay
partial wave analysis
omega(783)
mass spectrum: (pi+ pi-)

References(18)

Figures(10)

Study of the $J/\psi$ Decay Into Five Pions

DM2

Collaboration

•

J.E. Augustin
(
- Orsay, LAL
)

et al.

- Nucl.Phys.B 320 (1989) 1-19
•
DOI:
- 10.1016/0550-3213(89)90208-3

Study of the pi0 pi0 system in p p central collisions at 450-GeV/c

GAMS

Collaboration

•

D. Alde
(
- Los Alamos
)

et al.

- Phys.Lett.B 397 (1997) 350-356
•
DOI:
- 10.1016/S0370-2693(97)00228-1

Structure of the light scalar mesons from a coupled channel analysis of the S wave pi pi - K anti-K scattering

V.E. Markushin
(
- PSI, Villigen
)
,
M.P. Locher
(
- PSI, Villigen
)

- Frascati Phys.Ser. 15 (1999) 229-236,
•
e-Print:
- hep-ph/9906249

Left-hand singularities, hadron form-factors and the properties of the sigma meson

Zhiguang Xiao
(
- Peking U.
)
,
H.Q. Zheng
(
- Peking U.
)

- Nucl.Phys.A 695 (2001) 273-294
•
e-Print:
- hep-ph/0011260
•
DOI:
- 10.1016/S0375-9474(01)01100-9

$\pi \pi$ scattering

- Nucl.Phys.B 603 (2001) 125-179
•
e-Print:
- hep-ph/0103088
•
DOI:
- 10.1016/S0550-3213(01)00147-X

Experimental evidence for a light and broad scalar resonance in $D^+ \to \pi^- \pi^+ \pi^+$ decay

E791

Collaboration

•

E.M. Aitala
(
- Mississippi U.
)

et al.

- Phys.Rev.Lett. 86 (2001) 770-774
•
e-Print:
- hep-ex/0007028
•
DOI:
- 10.1103/PhysRevLett.86.770

The BES detector

BES

Collaboration

•

J.Z. Bai
(
- Beijing, Inst. High Energy Phys.
)

et al.

- Nucl.Instrum.Meth.A 344 (1994) 319-334
•
DOI:
- 10.1016/0168-9002(94)90081-7

The BES upgrade

BES

Collaboration

•

J.Z. Bai

et al.

- Nucl.Instrum.Meth.A 458 (2001) 627-637
•
DOI:
- 10.1016/S0168-9002(00)00934-7

Covariant tensor formalism for partial wave analyses of psi decay to mesons

- Eur.Phys.J.A 16 (2003) 537-547
•
e-Print:
- hep-ph/0211457
•
DOI:
- 10.1140/epja/i2002-10135-4

Covariant helicity amplitude analysis for J/psi --> gamma P P

Ning Wu
(
)
,
Tu-Nan Ruan
(
)

- Commun.Theor.Phys. 35 (2001) 547-552

Search for exotic states in J / psi --> rho eta pi

Ning Wu
(
- Beijing, Inst. High Energy Phys.
)
,
Tu-Nan Ruan
(
- CCAST World Lab, Beijing and
- Hefei, CUST
)

- Commun.Theor.Phys. 37 (2002) 309-314

Review of particle physics. Particle Data Group

et al.

- Phys.Rev.D 66 (2002) 010001
•
DOI:
- 10.1103/PhysRevD.66.010001

Is f0 (975) a narrow resonance?

- Phys.Rev.D 48 (1993) R3948-R3952
•
DOI:
- 10.1103/PhysRevD.48.R3948

$\pi\pi$ Phase Shift Analysis from 600-MeV to 1900-MeV

B. Hyams
(
- CERN
)
,
C. Jones
(
- CERN
)
,
P. Weilhammer
(
- CERN
)
,
W. Blum
(
- Munich, Max Planck Inst.
)
,
H. Dietl
(
- Munich, Max Planck Inst.
)

et al.

- Nucl.Phys.B 64 (1973) 134-162
•
DOI:
- 10.1016/0550-3213(73)90618-4

A New measurement of K+(e4) decay and the s wave pi pi scattering length a0(0)

BNL-E865

Collaboration

•

S. Pislak
(
- Zurich U. and
- Yale U.
)

et al.

- Phys.Rev.Lett. 87 (2001) 221801,
- Phys.Rev.Lett. 105 (2010) 019901 (erratum)
•
e-Print:
- hep-ex/0106071
•
DOI:
- 10.1103/PhysRevLett.105.019901

Comments on the sigma and kappa

D.V. Bugg
(
- Queen Mary, U. of London
)

- Phys.Lett.B 572 (2003) 1-7,
- Phys.Lett.B 595 (2004) 556-556 (erratum)
•
DOI:
- 10.1016/j.physletb.2004.06.050

The kappa resonance in s wave pi K scatterings

et al.

- Nucl.Phys.A 733 (2004) 235-261
•
e-Print:
- hep-ph/0310293
•
DOI:
- 10.1016/j.nuclphysa.2003.12.021

- Phys.Atom.Nucl. 60 1410