pdgLive

ψ (2 S)

\to

p \overset{―}{p}

Decay Mode Summary INSPIRE PDGID:

M071.27

	Mode ^()*	Fraction ( $Γ_{i}$ / $Γ$ )	Scale Factor/ Conf. Level	P(MeV/c)


$Γ_{111}$	$ψ (2 S)$ $\to$ $p \overset{―}{p}$	( $2.94$ $\pm 0.09$ ) $\times 10^{- 4}$	S=1.3	1586

Category:

Hadronic decays

The following data is related to the above value:

▸ expand all datablocks

Γ (

ψ (2 S)

\to

p \overset{―}{p}) / Γ_{total}

Γ_{111} / Γ

Γ (

ψ (2 S)

\to

p \overset{―}{p}) / Γ (

ψ (2 S)

\to

J / ψ (1 S) π^{+} π^{-})

Γ_{111} / Γ_{12}

Γ (

ψ (2 S)

\to

p \overset{―}{p})

\times

Γ (

ψ (2 S)

\to

e^{+} e^{-}) / Γ_{total}

Γ_{111} Γ_{7} / Γ

VALUE (eV)

EVTS

DOCUMENT ID

TECN

COMMENT

0.686 \pm 0.024

OUR FIT Error includes scale factor of 1.2.

0.63 \pm 0.05

OUR AVERAGE Error includes scale factor of 1.2.

0.67

\pm 0.12

\pm 0.02

LEES

2013

BABR

e^{+}

e^{-}

\to

p \overset{―}{p} γ

0.74

\pm 0.07

\pm 0.04

142

LEES

2013

BABR

e^{+}

e^{-}

\to

p \overset{―}{p} γ

0.579

\pm 0.038

\pm 0.036

2.7k

ANDREOTTI

2007

E835

p

\overset{―}{p}

\to

e^{+} e^{-}

J / ψ X

• • We do not use the following data for averages, fits, limits, etc. • •

0.70

\pm 0.17

\pm 0.03

AUBERT

2006

BABR

e^{+}

e^{-}

\to

p \overset{―}{p} γ

¹	ISR photon reconstructed in the detector

²	ISR photon undetected

³	Superseded by LEES 2013O

References

Except where otherwise noted, content of the 2024 Review of Particle Physics is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) license. The publication of the Review of Particle Physics is supported by US DOE, MEXT (Japan), INFN (Italy) and CERN. Individual collaborators receive support for their PDG activities from their respective institutes or funding agencies. © 2024. See LBNL disclaimers.

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