Measurement of the $e^+e^- o etapi^+pi^-$ cross section in the center-of-mass energy range 1.22-2.00 GeV with the SND detector at the VEPP-2000 collider

Measurement of the $e^+e^- o etapi^+pi^-$ cross section in the center-of-mass energy range 1.22-2.00 GeV with the SND detector at the VEPP-2000 collider
复制标题

使用 VEPP-2000 对撞机上的 SND 探测器测量 1.22-2.00 GeV 质心能量范围内的 $e^ e^- o etapi^ pi^-$ 横截面

DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
A. Vasiljev
A. Vasiljev
中科院分区：
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文献类型：
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作者：
V. Aulchenko;M. Achasov;A. Barnyakov;K. Beloborodov;A. Berdyugin;A. Bogdanchikov;A. Botov;T. Dimova;V. Druzhinin;V. Golubev;L. Kardapoltsev;A. Kharlamov;I. Koop;A. Korol;S. Koshuba;D. Kovrizhin;A. Kupich;K. Martin;A. Obrazovsky;E. Pakhtusova;A. Senchenko;S. Serednyakov;Z. Silagadze;Y. Shatunov;P. Shatunov;D. Shtol;D. Shwartz;A. Skrinsky;I. Surin;Y. Tikhonov;Y. Usov;A. Vasiljev

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In the experiment with the SND detector at the VEPP-2000 $e^+e^-$ collider the cross section for the process $e^+e^- oetapi^+pi^-$ has been measured in the center-of-mass energy range from 1.22 to 2.00 GeV. Obtained results are in agreement with previous measurements and have better accuracy. The energy dependence of the $e^+e^- oetapi^+pi^-$ cross section has been fitted with the vector-meson dominance model. From this fit the product of the branching fractions $B( ho(1450) oetapi^+pi^-)B( ho(1450) o e^+e^-)$ has been extracted and compared with the same products for $ ho(1450) oomegapi^0$ and $ ho(1450) opi^+pi^-$ decays. The obtained cross section data have been also used to test the conservation of vector current hypothesis.