Branching fractions for psi(2S) ---> gamma eta-prime and gamma eta

Bai, J.Z.; Bian, J.G.; Blum, Ira K.; Chai, Z.W.; Chen, G.P.; Chen, H.F.; Chen, J.; Chen, J.C.; Chen, Y.; Chen, Y.B.

doi:10.1103/PhysRevD.58.097101

Branching fractions for psi(2S) ---> gamma eta-prime and gamma eta

BES

Collaboration

Jun, 1998

7 pages

Published in:

Phys.Rev.D 58 (1998) 097101

e-Print:

hep-ex/9806002 [hep-ex]

DOI:

10.1103/PhysRevD.58.097101

PDG:

{{\mathit \psi}{(2S)}}

\rightarrow

{{\mathit \gamma}}{{\mathit \eta}}

Report number:

SLAC-REPRINT-1998-080,
BIHEP-EP1-98-01,
UH-511-903-98

Experiments:

BEPC-BES

View in:

pdf

reference search24 citations

Citations per year

Abstract: (arXiv)

We report the first measurements of the branching fractions:

B(\psi(2S) -> \gamma \eta') = (1.54 \pm 0.31 \pm 0.23) x 10^{-4}

and

B(\psi(2S) -> \gamma \eta) = (0.53 \pm 0.31 \pm 0.08) x 10^{-4}

. The

\psi(2S)

to

\gamma \eta'

result is consistent with expectations of a model that considers the possibility of

\eta' - \eta

mixing. The ratio of the

\psi(2S)

to

\gamma \eta'

and

\psi(2S)

to

\gamma \eta

rates is used to determine the pseudoscalar octet-singlet mixing angle.

electron positron: colliding beams
electron positron: annihilation
psi(3685): electroproduction
psi(3685): radiative decay
psi(3685): branching ratio
eta(958): hadronic decay
eta: hadronic decay
interference: (eta/c(2980) eta)
mass spectrum
BES

References(16)

Figures(0)

Review of particle physics. Particle Data Group

et al.

- Phys.Rev.D 54 (1996) 1, 1-720
•
DOI:
- 10.1103/PhysRevD.54.1

Measurement of $\psi(3097)$ and $\psi^\prime$ (3686) Decays Into Selected Hadronic Modes

M.E.B. Franklin
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)
,
G.J. Feldman
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)
,
G.S. Abrams
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)
,
M.S. Alam
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)
,
C.A. Blocker
(
- SLAC and
- LBL, Berkeley and
- UC, Berkeley
)

et al.

- Phys.Rev.Lett. 51 (1983) 963-966
•
DOI:
- 10.1103/PhysRevLett.51.963

Vector Gluonium as a Possible Explanation for Anomalous psi Decays

Wei-Shu Hou
(
- UCLA
)
,
A. Soni
(
- UCLA
)

- Phys.Rev.Lett. 50 (1983) 569
•
DOI:
- 10.1103/PhysRevLett.50.569

Exclusive Charmonium Decays: The $J/\psi (\psi^\prime$ ) $\to \rho \pi$ , $K^* \bar{K}$ Puzzle

- Phys.Rev.Lett. 59 (1987) 621
•
DOI:
- 10.1103/PhysRevLett.59.621

Observation of high momentum eta-prime production in B decay

CLEO

Collaboration

•

T.E. Browder
(
- Hawaii U.
)

et al.

- Phys.Rev.Lett. 81 (1998) 1786-1790
•
e-Print:
- hep-ex/9804018
•
DOI:
- 10.1103/PhysRevLett.81.1786

The Color octet intrinsic charm in eta-prime and b ---> eta-prime X decays

Feng Yuan
(
- Peking U.
)
,
Kuang-Ta Chao
(
- CCAST World Lab, Beijing and
- Peking U.
)

- Phys.Rev.D 56 (1997) R2495-R2498
•
e-Print:
- hep-ph/9706294
•
DOI:
- 10.1103/PhysRevD.56.R2495

Why is the B ---> eta-prime X decay width so large?

- Phys.Rev.Lett. 80 (1998) 438-441
•
e-Print:
- hep-ph/9705251
•
DOI:
- 10.1103/PhysRevLett.80.438

The Gluon / charm content of the eta-prime meson and instantons

- Phys.Rev.D 57 (1998) 2001-2004
•
e-Print:
- hep-ph/9706316
•
DOI:
- 10.1103/PhysRevD.57.2001

{QCD} Axial Anomaly and Mixing of Pseudoscalars

Kuang-Ta Chao
(
- CCAST World Lab, Beijing and
- Peking U.
)

- Nucl.Phys.B 317 (1989) 597-616
•
DOI:
- 10.1016/0550-3213(89)90534-8

Mixing of eta, eta-prime with c anti-c, b anti-b states and their radiative decays

Kuang-Ta Chao
(
- CCAST World Lab, Beijing and
- Peking U.
)

- Nucl.Phys.B 335 (1990) 101-114
•
DOI:
- 10.1016/0550-3213(90)90172-A

Radiative Decays as Tests of the Symmetries of the $\psi$ Particles

Robert N. Cahn
(
- Fermilab and
- Washington U., Seattle
)
,
Michael S. Chanowitz
(
- Fermilab and
- LBL, Berkeley
)

- Phys.Lett.B 59 (1975) 277-280
•
DOI:
- 10.1016/0370-2693(75)90045-3

Heavy Vector Meson Dominance

T.F. Walsh
(
- DESY
)

- Lett.Nuovo Cim. 14 (1975) 290
•
DOI:
- 10.1007/BF02743197

Mixing of Pseudoscalar Mesons and m1 Radiative Decays

H. Fritzsch
(
- CERN
)
,
John David Jackson
(
- CERN
)

- Phys.Lett.B 66 (1977) 365-369
•
DOI:
- 10.1016/0370-2693(77)90016-8

The eta Eta-prime Mixing Angle

Frederick J. Gilman
(
- SLAC
)
,
Russel Kauffman
(
- SLAC
)

- Phys.Rev.D 36 (1987) 2761,
- Phys.Rev.D 37 (1988) 3348 (erratum)
•
DOI:
- 10.1103/PhysRevD.37.3348

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 $\psi^\prime$ to $J/\psi$ Hadronic Decay Puzzle

Stephen S. Pinsky
(
- Ohio State U.
)

- Phys.Lett.B 236 (1990) 479-482
•
DOI:
- 10.1016/0370-2693(90)90387-L