|
This article is cited in 6 scientific papers (total in 6 papers)
FIELDS, PARTICLES, AND NUCLEI
$K_{e3}$ decay studies in the OKA experiment
O. P. Yushchenkoa, V. F. Kurshetsova, A. P. Filina, S. A. Akimenkoa, A. V. Artamonova, A. M. Blika, V. V. Brekhovskikha, V. S. Burtovoya, S. V. Donskova, A. V. Inyakina, A. M. Gorina, G. V. Khaustova, S. A. Kholodenkoa, V. N. Kolosova, A. S. Konstantinova, V. M. Leontieva, V. A. Lishina, M. V. Medynskya, Yu. V. Mikhailova, V. F. Obraztsova, V. A. Polyakova, A. V. Popova, V. I. Romanovskya, V. I. Rykalina, A. S. Sadovskya, V. D. Samoilenkoa, V. K. Semenova, O. V. Stenyakina, O. G. Tchikileva, V. A. Uvarova, V. A. Dukbc, S. N. Filippovb, E. N. Gushchinb, Yu. G. Kudenkob, A. A. Khudyakovb, V. I. Kravtsovb, A. Yu. Polyarushb, V. N. Bychkovd, G. D. Kekelidzed, V. M. Lysand, V. Zh. Zalikhanovd a Institute for High Energy Physics, National Research Center Kurchatov Institute, Protvino, Moscow region, Russia
b Institute for Nuclear Research, Russian Academy of Sciences, Troitsk, Moscow, Russia
c University of Birmingham
d Joint Institute for Nuclear Research, Dubna, Moscow region, Russia
Abstract:
Recent results from OKA setup concerning form factor studies in $K_{e3}$ decay are presented. About $5.25$ M events obtained for decays of $17.7$ GeV/$cK^+$ are selected for the analysis. The linear and quadratic slopes for the decay form factor $f_+(t)$ are measured: $\lambda_{+}=(2.95 \pm 0.022 \pm 0.018 )\times 10^{-2}$ for the linear slope fit and $\lambda'_{+}=(2.611 \pm 0.035 \pm 0.028 )\times 10^{-2}$, $\lambda''_{+}=(1.91 \pm 0.19 \pm 0.14)\times 10^{-3}$ for the quadratic one. The scalar and tensor contributions are compatible with zero. Several alternative parametrizations are tried: the Pole fit parameter is found to be $M_V = 891 \pm 3$ MeV; the parameter of the dispersive parametrization is measured to be $\Lambda_+ =(2.458 \pm 0.018) \times 10^{-2}$.
Received: 21.11.2017 Revised: 06.12.2017
Citation:
O. P. Yushchenko, V. F. Kurshetsov, A. P. Filin, S. A. Akimenko, A. V. Artamonov, A. M. Blik, V. V. Brekhovskikh, V. S. Burtovoy, S. V. Donskov, A. V. Inyakin, A. M. Gorin, G. V. Khaustov, S. A. Kholodenko, V. N. Kolosov, A. S. Konstantinov, V. M. Leontiev, V. A. Lishin, M. V. Medynsky, Yu. V. Mikhailov, V. F. Obraztsov, V. A. Polyakov, A. V. Popov, V. I. Romanovsky, V. I. Rykalin, A. S. Sadovsky, V. D. Samoilenko, V. K. Semenov, O. V. Stenyakin, O. G. Tchikilev, V. A. Uvarov, V. A. Duk, S. N. Filippov, E. N. Gushchin, Yu. G. Kudenko, A. A. Khudyakov, V. I. Kravtsov, A. Yu. Polyarush, V. N. Bychkov, G. D. Kekelidze, V. M. Lysan, V. Zh. Zalikhanov, “$K_{e3}$ decay studies in the OKA experiment”, Pis'ma v Zh. Èksper. Teoret. Fiz., 107:3 (2018), 147–150; JETP Letters, 107:3 (2018), 139–142
Linking options:
https://www.mathnet.ru/eng/jetpl5483 https://www.mathnet.ru/eng/jetpl/v107/i3/p147
|
Statistics & downloads: |
Abstract page: | 208 | Full-text PDF : | 32 | References: | 29 | First page: | 8 |
|