Cross Section of the Process e+e- → nn<overline> near the Threshold

被引：0

作者：

Achasov, M. N. ^{[1
,2
]}

Barnyakov, A. Yu. ^{[1
,2
]}

Bedarev, E. V. ^{[1
,2
]}

Beloborodov, K. I. ^{[1
,2
]}

Berdyugin, A. V. ^{[1
,2
]}

Bogdanchikov, A. G. ^{[1
]}

Botov, A. A. ^{[1
]}

Dimova, T. V. ^{[1
,2
]}

Druzhinin, V. P. ^{[1
,2
]}

Zhabin, V. N. ^{[1
,2
]}

Zharinov, Yu. M. ^{[1
]}

Kardapoltsev, L. V. ^{[1
,2
]}

Kasaev, A. S. ^{[1
]}

Kattsin, A. A. ^{[1
]}

Kovrizhin, D. P. ^{[1
]}

Korol, A. A. ^{[1
,2
]}

Kupich, A. S. ^{[1
,2
]}

Kryukov, A. P. ^{[1
]}

Lysenko, A. P. ^{[1
]}

Melnikova, N. A. ^{[1
]}

Muchnoi, N. Yu. ^{[1
,2
]}

Obrazovsky, A. E. ^{[1
]}

Pakhtusova, E. V. ^{[1
]}

Pugachev, K. V. ^{[1
,2
]}

Rastigeev, S. A. ^{[1
]}

Rogovsky, Yu. A. ^{[1
,2
]}

Senchenko, A. I. ^{[1
]}

Serednyakov, S. I. ^{[1
,2
]}

Silagadze, Z. K. ^{[1
,2
]}

Surin, I. K. ^{[1
]}

Usov, Yu. V. ^{[1
]}

Kharlamov, A. G. ^{[1
,2
]}

Chistyakov, D. E. ^{[1
,2
]}

Shatunov, Yu. M. ^{[1
]}

Sherstyuk, S. P. ^{[1
,2
]}

Shtol, D. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Siberian Div, Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, Novosibirsk 630090, Russia

来源：

PHYSICS OF ATOMIC NUCLEI | 2024年 / 87卷 / 05期

基金：

俄罗斯科学基金会;

关键词：

ANNIHILATION;

D O I：

10.1134/S1063778824700637

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The e(+)e(- )-> nn<overline> cross section was measured at center of mass (c.m.) energies from the threshold to 1908 MeV. The experiment to measure the cross section has been carried out at the VEPP-2000 e(+)e(-) collider in 13 energy points. The SND detector is used to detect the produced neutron-antineutrons (nn<overline>) events. A special time measurement system on the calorimeter was used to select the time-delayed nn<overline> events. The measured e(+)e(- )-> nn<overline> cross section is 0.4-0.6 nb. The neutron effective timelike form factor in the energy range under study varies from 0.3 to 0.6.

引用

页码：604 / 613

页数：10

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