Measurements of psi(2S) decays to octet baryon-antibaryon pairs - INSPIRE

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Measurements of psi(2S) decays to octet baryon-antibaryon pairs

BES

Collaboration

•

M. Ablikim
(
- Beijing, Inst. High Energy Phys.
)

Oct, 2006

8 pages

Published in:

Phys.Lett.B 648 (2007) 149-155

e-Print:

hep-ex/0610079 [hep-ex]

DOI:

10.1016/j.physletb.2007.02.029

PDG:

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

\rightarrow

{{\mathit p}}{{\overline{\mathit p}}}

Experiments:

BEPC-BES

View in:

ADS Abstract Service

reference search31 citations

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Abstract:

With a sample of 14 million psi(2S) events collected by the BESII detector at the Beijing Electron Positron Collider (BEPC), the decay channels psi(2S)->p p-bar, Lambda Lambda-bar, Sigma0 Sigma0-bar, Xi Xi-bar are measured, and their branching ratios are determined to be (3.36+-0.09+-0.24)*10E-4, (3.39+-0.20+-0.32)*10E-4, (2.35+-0.36+-0.32)*10E-4, (3.03+-0.40+-0.32)*10E-4, respectively. In the decay psi(2S)->p p-bar, the angular distribution parameter alpha is determined to be 0.82+-0.17+-0.04.

14.40.Gx
12.38.Qk
13.25.Gv
electron positron: colliding beams
electron positron: annihilation
psi(3685): electroproduction
psi(3685): hadronic decay
baryon: pair production
p
Lambda

References(14)

Figures(0)

Measurement of psi(2S) decays to baryon pairs

BES

Collaboration

•

J.Z. Bai

et al.

- Phys.Rev.D 63 (2001) 032002
•
e-Print:
- hep-ex/0008031
•
DOI:
- 10.1103/PhysRevD.63.032002

Branching fraction measurements of psi(2S) decay to baryon-antibaryon final states

CLEO

Collaboration

•

T.K. Pedlar
(
- Luther Coll.
)

et al.

- Phys.Rev.D 72 (2005) 051108
•
e-Print:
- hep-ex/0505057
•
DOI:
- 10.1103/PhysRevD.72.051108

Helicity Selection Rules and Tests of Gluon Spin in Exclusive QCD Processes

Stanley J. Brodsky
(
- SLAC
)
,
G.Peter Lepage
(
- Cornell U., LNS
)

- Phys.Rev.D 24 (1981) 2848
•
DOI:
- 10.1103/PhysRevD.24.2848

Isospin Violation in $J/\psi \to$ Baryon Anti-baryon

- Phys.Rev.D 25 (1982) 1345
•
DOI:
- 10.1103/PhysRevD.25.1345

Quark Mass Effects in $\psi \to B \bar{B}$ Decays

Christian Carimalo
(
- College de France
)

- Int.J.Mod.Phys.A 2 (1987) 249
•
DOI:
- 10.1142/S0217751X87000107

Measurement of the angular distribution in anti-p p ---> psi(2S) ---> e+ e-

Fermilab E835

Collaboration

•

M. Ambrogiani

et al.

- Phys.Lett.B 610 (2005) 177-182
•
e-Print:
- hep-ex/0412007
•
DOI:
- 10.1016/j.physletb.2005.01.093

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

BESII detector simulation

BES

Collaboration

•

M. Ablikim

et al.

- Nucl.Instrum.Meth.A 552 (2005) 344-356
•
e-Print:
- physics/0503001
•
DOI:
- 10.1016/j.nima.2005.06.079

The Measurements of J / psi ---> p anti-p

BES

Collaboration

•

J.Z. Bai

et al.

- Phys.Lett.B 591 (2004) 42-48
•
e-Print:
- hep-ex/0402034
•
DOI:
- 10.1016/j.physletb.2004.04.022

The GEANT - CALOR interface and benchmark calculations of ZEUS test calorimeters

C. Zeitnitz
(
- Arizona U.
)
,
T.A. Gabriel
(
- Oak Ridge
)

- Nucl.Instrum.Meth.A 349 (1994) 106-111
•
DOI:
- 10.1016/0168-9002(94)90613-0

Particle Production in Hadron - Nucleus Collisions in a Multichain Fragmentation Model

J. Ranft
(
- CERN
)
,
S. Ritter
(
- Leipzig U.
)

- Z.Phys.C 20 (1983) 347,
- Ahrenshoop Sympos.1983:244
•
DOI:
- 10.1007/BF01407827

Study of J / psi decays to Lambda anti-Lambda and Sigma0 anti-Sigma0

BES

Collaboration

•

M. Ablikim

et al.

- Phys.Lett.B 632 (2006) 181-186
•
e-Print:
- hep-ex/0506020
•
DOI:
- 10.1016/j.physletb.2005.10.079

Partial wave analysis of psi-prime ---> pi+ pi- pi0 at BESII

BES

Collaboration

•

M. Ablikim

et al.

- Phys.Lett.B 619 (2005) 247-254
•
DOI:
- 10.1016/j.physletb.2005.05.038

Measurement of the branching fraction of J / psi ---> pi+ pi- pi0

BES

Collaboration

•

J.Z. Bai

et al.

- Phys.Rev.D 70 (2004) 012005
•
e-Print:
- hep-ex/0402013
•
DOI:
- 10.1103/PhysRevD.70.012005