Precision Measurement of the e+e- --> K+K-(gamma) Cross Section with the Initial-State Radiation Method at BaBar

Abstract

A precise measurement of the cross section for the process e+e- --> K+K-(gamma) from threshold to an energy of 5 GeV is obtained with the initial-state radiation (ISR) method using 232 fb^{-1} of data collected with the BaBar detector at e+e- center-of-mass energies near 10.6 GeV. The measurement uses the effective ISR luminosity determined from the e+e- --> mu+mu-(gamma)gamma_ISR process with the same data set. The corresponding lowest-order contribution to the hadronic vacuum polarization term in the muon magnetic anomaly is found to be a_mu^{KK, LO}=(22.93 +- 0.18_{stat} +- 0.22_{syst}) * 10^{-10}. The charged kaon form factor is extracted and compared to previous results. Its magnitude at large energy significantly exceeds the asymptotic QCD prediction, while the measured slope is consistent with the prediction.

32 pages, 56 postscript figures, submitted to PRD

References in corpus (1)

• Measurement of the e+e- -> K+K- cross section in the energy range s**(1/2) = 1.04 - 1.38 GeV with the SND detector in the experiment at the VEPP-2M e+e- collider

Cited by in corpus (49)

• The muon $g-2$ and $\alpha (M_Z^2)$: a new data-based analysis
• Reevaluation of the hadronic vacuum polarisation contributions to the Standard Model predictions of the muon g-2 and alpha(mZ) using newest hadronic cross-section data
• Coupling QCD-scale axion-like particles to gluons
• Cosmological Constraints on Very Dark Photons
• Measurement of $e^{+}{e}^{-}\to K^{+}{K}^{-}$ cross section at $\sqrt{s}=2.00-3.08$ GeV
• Kaon electromagnetic form factors in dispersion theory
• Cross sections for the reactions $e^{+}{e}^{-}\to K_S^0{K}_L^0$, $K_S^0{K}_L^0{\pi }^{+}{\pi }^{-}$, $K_S^0{K}_S^0{\pi }^{+}{\pi }^{-}$, and $K_S^0{K}_S^0{K}^{+}{K}^{-}$ from events with initial-state radiation
• Leading-order hadronic contribution to the electron and muon g-2
• Moments of $\varphi$ meson spectral functions in vacuum and nuclear matter
• Dispersive $\pi K\to \pi K$ and $\pi \pi \to K\bar{K}$ amplitudes from scattering data, threshold parameters and the lightest strange resonance $\kappa$ or $K_0^{\ast }(700)$
• Phi meson spectral moments and QCD condensates in nuclear matter
• Study of the process $e^{+}{e}^{-}\to K^{+}{K}^{-}$ in the center-of-mass energy range 1010--1060~MeV with the CMD-3 detector
• Measurement of the ${\mathbf{e}}^{+}{\mathbf{e}}^{-}\to {\mathbf{K}}^{+}{\mathbf{K}}^{-}$ cross section in the energy range $\sqrt{\mathbf{s}}=1.05-2.0$ GeV
• Measurement of the spectral function for the ${\tau }^{-}\to K^{-}{K}_S{\nu }_{\tau }$ decay
• Strong and radiative decays of excited vector mesons and predictions for a new $\varphi (1930)$ resonance
• Study of the reactions $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{\pi }^0{\pi }^0{\pi }^0\gamma$ and ${\pi }^{+}{\pi }^{-}{\pi }^0{\pi }^0\eta \gamma$ at center-of-mass energies from threshold to 4.35 GeV using initial-state radiation
• Radiative Return Capabilities of a High-Energy, High-Luminosity $e^{+}{e}^{-}$ Collider
• Study of the $e^{+}{e}^{-}\to K^{+}{K}^{-}$ reaction in the energy range from 2.6 to 8.0 GeV
• Will the subprocesses $\rho (770,1450{)}^0\to K^{+}{K}^{-}$ contribute large branching fractions for $B^{\pm }\to {\pi }^{\pm }{K}^{+}{K}^{-}$ decays?
• Constraints on Axion couplings from the CDEX-1 experiment at the China Jinping Underground Laboratory
• Cross sections for the reactions $e^{+}{e}^{-}\to K_S^0{K}_L^0{\pi }^0$, $K_S^0{K}_L^0\eta$, and $K_S^0{K}_L^0{\pi }^0{\pi }^0$ from events with initial-state radiation
• Hadronic Footprint of GeV-Mass Dark Matter
• Resonances in $e^{+}{e}^{-}$ annihilation near 2.2 GeV
• Two and Three Pseudoscalar Production in $e^{+}{e}^{-}$ annihilation and their contributions to $(g-2{)}_{\mu }$
• Contributions for the kaon pair from $\rho (770)$, $\omega (782)$ and their excited states in the $B\to K\bar{K}h$ decays
• Observation of the doubly radiative decay ${\eta }^{\prime }\to \gamma \gamma {\pi }^0$
• Deciphering the light vector meson contribution to the cross sections of $e^{+}{e}^{-}$ annihilations into the open-strange channels through a combined analysis
• Assignments of the $Y(2040)$, $\rho (1900)$, and $\rho (2150)$ in the quark model
• Reconciling the X(2240) with the Y(2175)
• Contributions of the kaon pair from $\rho (770)$ for the three-body decays $B\to DK\bar{K}$
• Isoscalar and isovector kaon form factors from $e^{+}{e}^{-}$ and $\tau$ data
• Measurement of the $e^{+}{e}^{-}\to K_S^0{K}^{\pm }{\pi }^{\mp }{\pi }^0$ and $K_S^0{K}^{\pm }{\pi }^{\mp }\eta$ cross sections using initial-state radiation
• Review of Recent Calculations of the Hadronic Vacuum Polarisation Contribution
• Radiative corrections and Monte Carlo tools for low-energy hadronic cross sections in $e^{+}{e}^{-}$ collisions
• Long-distance weak annihilation contribution to the $B^{\pm }\to ({\pi }^{\pm },K^{\pm }){\ell }^{+}{\ell }^{-}$ decays
• Resonances $\rho (1450{)}^{+}$ and $\rho (1700{)}^{+}$ in $B\to DKK$ decays
• Measurement of hadron cross sections with the SND detector
• Radially excited pion: electromagnetic form factor and the box contribution to the muon's $g-2$
• Study of the reactions $e^{+}{e}^{-}\to 2({\pi }^{+}{\pi }^{-}){\pi }^0{\pi }^0{\pi }^0$ and $e^{+}{e}^{-}\to 2({\pi }^{+}{\pi }^{-}){\pi }^0{\pi }^0\eta$ at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation
• Low-mass enhancement of kaon pairs in $B^{+}\to {\bar{D}}^{(\ast )0}{K}^{+}{\bar{K}}^0$ and $B^0\to D^{(\ast )-}{K}^{+}{\bar{K}}^0$ decays
• Study of $\psi (3770)$ decaying to Baryon anti-Baryon Pairs
• Manifestation of kaonium in the $e^{+}{e}^{-}\to K^{+}{K}^{-}$ process
• Photon radiation in $e^{+}{e}^{-}\to$ hadrons at low energies with CARLOMAT 3.1
• Baryonic content of the pion
• Low energy process $e^{+}{e}^{-}\to K^{+}{K}^{-}$ in the extended Nambu-Jona-Lasinio model
• Evidence for the decay $\psi (3770)\to K^{+}{K}^{-}$
• Low-energy hadronic cross sections measurements at BABAR and g-2 of the muon
• Analytical formula for the cross section of hadron production from $e^{+}{e}^{-}$ collisions around the narrow charmouinum resonances
• Search for the $Y(2175)$ in the photoproduction cross section measurement of $\gamma p\to \varphi {\pi }^{+}{\pi }^{-}p$ at GlueX