Study of the Reactions e⁺e^-→π⁺π^-π⁰π⁰π⁰ and π⁺π^-π⁰π⁰η At Center-Of-Mass Energies From Threshold to 4.35 GeV Using Initial-State Radiation

Author(s)

J. P. Lees
V. Poireau
V. Tisserand
E. Grauges
A. Palano
G. Eigen
D. N. Brown
Yu G. Kolomensky
M. Fritsch
H. Koch
T. Schroeder
C. Hearty
T. S. Mattison
J. A. McKenna
R. Y. So
V. E. Blinov
A. R. Buzykaev
V. P. Druzhinin
V. B. Golubev
E. A. Kozyrev
Milind Purohit, University of South CarolinaFollow
Et. Al.

Document Type

Article

Abstract

We study the processes e⁺e⁻ → π⁺π⁻π⁰π⁰π⁰nγ in which an energetic photon is radiated from the initial state. The data are collected with the BABAR detector at SLAC. About 14 000 and 4700 events, respectively, are selected from a data sample corresponding to an integrated luminosity of 469 fb⁻¹. The invariant mass of the hadronic final state defines the effective e⁺e⁻ center-of-mass energy. From the mass spectra, the first precise measurement of the e⁺e⁻ → π⁺π⁻π⁰π⁰π⁰ cross section and the first measurement ever of the e⁺e⁻ → π⁺π⁻π⁰π⁰η cross section are performed. The center-of-mass energies range from threshold to 4.35 GeV. The systematic uncertainty is typically between 10% and 13%. The contributions from ωπ⁰π⁰, ηπ⁺π⁻, and other intermediate states are presented. We observe the J/ψ and ψ(2S) in most of these final states and measure the corresponding branching fractions, many of them for the first time.

Digital Object Identifier (DOI)

https://doi.org/10.1103/PhysRevD.98.112015

Publication Info

Published in Physical Review D, Volume 98, Issue 11, 2018.

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.

Rights

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP³.

APA Citation

Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., Brown, D. N., Kolomensky, Yu. G., Fritsch, M., Koch, H., Schroeder, T., Hearty, C., Mattison, T. S., McKenna, J. A., So, R. Y., Blinov, V. E., Buzykaev, A. R., Druzhinin, V. P., Golubev, V. B., … Wu, S. L. (2018). Study of the Reactions e+e-→π+π-π0π0π0 and π+π-π0π0η At Center-Of-Mass Energies From Threshold to 4.35 Gev Using Initial-State Radiation. Physical Review D, 98(11). https://doi.org/10.1103/physrevd.98.112015