Search results for "pi0"

showing 10 items of 242 documents

"Table 1" of "Search for the isospin violating decay $Y(4260)\rightarrow J/\psi \eta \pi^{0}$"

2016

Results on $e^{+}e^{-}\rightarrow J/\psi\eta\pi^{0}$. Listed in the table are the integrated luminosity $\cal{L}$, radiative correction factor (1+$\delta^{r}$) taken from QED calculation assuming the $Y(4260)$ cross section follows a Breit$-$Wigner line shape, vacuum polarization factor (1+$\delta^{v}$), average efficiency ($\epsilon^{ee}{\cal B}^{ee}$ + $\epsilon^{\mu\mu}{\cal B}^{\mu\mu}$), number of observed events $N^\text{obs}$, number of estimated background events $N^\text{bkg}$, the efficiency corrected upper limits on the number of signal events $N^\text{up}$, and upper limits on the Born cross section $\sigma^\text{Born}_\text{UL}$ (at the 90 $\%$ C.L.) at each energy point.

Electron ProductionE+ E- ScatteringIntegrated Cross SectionEFFExclusiveE+ E- --> J/PSI ETA PI0NCross SectionSIG4.009-4.599
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"Table 5" of "Lowest Q**2 measurement of the gamma* p --> delta reaction: Probing the pionic contribution."

2006

Unpolarized cross sections as a function of the azimuthal pion angle relative to the virtual photon direction from which the extracted results were taken (to be published).

Electron production7.950E-017.950E-01Integrated Cross SectionE- P --> E- PI0 PExclusiveCross SectionNuclear ExperimentSIG1.221
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"Table 7" of "Lowest Q**2 measurement of the gamma* p --> delta reaction: Probing the pionic contribution."

2006

Unpolarized cross sections as a function of the azimuthal pion angle relative to the virtual photon direction from which the extracted results were taken (to be published).

Electron production7.950E-017.950E-01Integrated Cross SectionE- P --> E- PI0 PExclusiveCross SectionNuclear ExperimentSIG1.221
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"Table 6" of "Lowest Q**2 measurement of the gamma* p --> delta reaction: Probing the pionic contribution."

2006

Unpolarized cross sections as a function of the azimuthal pion angle relative to the virtual photon direction from which the extracted results were taken (to be published).

Electron production7.950E-017.950E-01Integrated Cross SectionE- P --> E- PI0 PExclusiveCross SectionNuclear ExperimentSIG1.221
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"Table 1" of "Search for the dark photon in $\pi^0$ decays"

2015

The obtained 90% CL upper limits (ULs) on the mixing parameter $\epsilon^2$ for each dark photon (DP) mass hypothesis tested.

Electron productionCOUPLINGMDecayPI0 --> GAMMA E+ E-
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"Table 3" of "Lowest Q**2 measurement of the gamma* p --> delta reaction: Probing the pionic contribution."

2006

Measured value of SIG(C=LT) as a function of the pion angle relative to thevirtual photon direction.

Electron productionNuclear Theory7.950E-017.950E-01Integrated Cross SectionE- P --> E- PI0 PExclusiveCross SectionNuclear ExperimentSIG1.221Computer Science::Cryptography and Security
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"Table 2" of "Lowest Q**2 measurement of the gamma* p --> delta reaction: Probing the pionic contribution."

2006

Measured value of SIG(C=TT) as a function of the pion angle relative to thevirtual photon direction.

Electron productionNuclear Theory7.950E-017.950E-01Integrated Cross SectionE- P --> E- PI0 PExclusiveCross SectionNuclear ExperimentSIG1.221Computer Science::Cryptography and Security
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"Table 5" of "In-medium modifications of the pi pi interaction in photon-induced reactions."

2005

Differential cross section for PI0PI+/- production with a Carbon target. Errors are statistical only.

GAMMA C --> PI0 PI-Single Differential Cross SectionGAMMA C --> PI0 PI+PhotoproductionDSIG/DMExclusiveGAMMA NUCLEUS --> PI- PI0GAMMA NUCLEUS --> PI+ PI0
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"Table 3" of "In-medium modifications of the pi pi interaction in photon-induced reactions."

2005

Differential cross section for PI0PI0 production with a Lead target. Errors are statistical only.

GAMMA NUCLEUS --> PI0 PI0Single Differential Cross SectionPhotoproductionDSIG/DMExclusiveGAMMA PB --> PI0 PI0
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"Table 2" of "In-medium modifications of the pi pi interaction in photon-induced reactions."

2005

Differential cross section for PI0PI0 production with a Carbon target. Errors are statistical only.

GAMMA NUCLEUS --> PI0 PI0Single Differential Cross SectionPhotoproductionDSIG/DMGAMMA C --> PI0 PI0Exclusive
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