Study of $e^{+}{e}^{-}\to p\bar{p}$ in the vicinity of $\psi (3770)$

Abstract

Using 2917 ${\mathrm{pb}}^{-1}$ of data accumulated at 3.773~$\mathrm{GeV}$, 44.5~${\mathrm{pb}}^{-1}$ of data accumulated at 3.65~$\mathrm{GeV}$ and data accumulated during a $\psi (3770)$ line-shape scan with the BESIII detector, the reaction $e^{+}{e}^{-}\to p\bar{p}$ is studied considering a possible interference between resonant and continuum amplitudes. The cross section of $e^{+}{e}^{-}\to \psi (3770)\to p\bar{p}$, $\sigma (e^{+}{e}^{-}\to \psi (3770)\to p\bar{p})$, is found to have two solutions, determined to be ($0.059\pm 0.032\pm 0.012$) pb with the phase angle $\varphi =(255.8\pm 37.9\pm 4.8{)}^{\circ }$ ($<$0.11 pb at the 90% confidence level), or $\sigma (e^{+}{e}^{-}\to \psi (3770)\to p\bar{p})=(2.57\pm 0.12\pm 0.12$) pb with $\varphi =(266.9\pm 6.1\pm 0.9{)}^{\circ }$ both of which agree with a destructive interference. Using the obtained cross section of $\psi (3770)\to p\bar{p}$, the cross section of $p\bar{p}\to \psi (3770)$, which is useful information for the future PANDA experiment, is estimated to be either ($9.8\pm 5.7$) nb ($<17.2$ nb at 90% C.L.) or $(425.6\pm 42.9)$ nb.

References in corpus (8)

• Measurements of the cross sections for $e^{+}{e}^{-}\to \mathrm{hadrons}$ at 3.650, 3.6648, 3.773 GeV and the branching fraction for $\psi (3770)\to \mathrm{non}-D\bar{D}$
• Measurements of the braching fractions for psi(3770)--> D0D0-bar,D+D-,DD-bar$ and the resonance parameters of psi(3770) and psi(2S)
• Exclusive charm production in pbar p collisions at s^1/2 <15 GeV
• Proton-Antiproton Annihilation into a Lambda_c-Antilambda_c Pair
• Study of e${}^{+}$e${}^{-}$ $\to \text{p}\overline{\text{p}}{\pi }^0$ in the Vicinity of the $\psi \text{(3770)}$
• Charm production in antiproton-proton annihilation
• Parton Model Calculation of Inclusive Charm Production by a Low-energy Antiproton Beam
• Exclusive $\bar{\Xi }\Xi$ and ${\bar{\Xi }}_c{\Xi }_c$ production in $\bar{p}p$ collisions at $\sqrt{s}\le 15$ GeV

Cited by in corpus (12)

• Hyperon Form Factors & Diquark Correlations
• Measurement of the cross section for $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }$ and evidence of the decay $\psi (3770)\to \Lambda \bar{\Lambda }$
• Timelike nucleon electromagnetic form factors: All about interference of isospin amplitudes
• Study of e${}^{+}$e${}^{-}$ $\to \text{p}\overline{\text{p}}{\pi }^0$ in the Vicinity of the $\psi \text{(3770)}$
• Impact of the interference between the resonance and continuum amplitudes on vector quarkonia decay branching fraction measurements
• The $\psi$(3770) resonance and its production in $\bar{p}p\to D\bar{D}$
• The cross section of the process $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }$ in the vicinity of charmonium $\psi (3770)$ including three-gluon and $D$-meson loop contributions
• The cross section of the process $e^{+}{e}^{-}\to p\bar{p}$ in the vicinity of charmonium $\psi (3770)$ including three-gluon and $D$-meson loop contributions
• Novel correlated $D^0\overline{D}{}^0$ systems for $c/b$ physics and tests of $T/CPT$
• Antiproton--proton annihilation into light neutral meson pairs within an effective meson theory
• The $R_{uds}$ value in the vicinity of $\psi (3770)$ state
• Analytical formula for the cross section of hadron production from $e^{+}{e}^{-}$ collisions around the narrow charmouinum resonances