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Title: Measurement of neutral-meson masses in meson-nucleus interactions at a momentum of 7 GeV/c at the Hyperon-M setup

Abstract

The π{sup 0}, η, K{sup 0}, ω, and f{sub 2}(1270) masses were measured at the HYPERON-Msetup in meson-nucleus interactions at a momentum of 7 GeV/c by using six nuclear targets: Be, C, Al, Cu, Sn, and Pb. The experiment in question proved to be insensitive to the expected effects of a modification to the omega-meson mass in nuclear matter. As for the f{sub 2}(1270) meson, its mass and width values averaged over all experimental data, <##> } m } f 2 $$ m{sub {f_2 }} $$m{sub f{sub 2}} = 1275.8 ± 1.0(stat.) ± 0.4(syst.) MeV/c{sup 2} and <##> } } f 2 $$ /Gamma {sub {f_2 }} $$Γ{sub f{sub 2}} = 190.3 ± 1.9(stat.) ± 1.8(syst.) MeV/c{sup 2}, agree well with the world-average values. At the same time, our experimental data do not rule out the possible effect of an in-medium modification to the f{sub 2}(1270)-meson mass for heavy nuclei at a level better than 0.4%.

Publication Date:
OSTI Identifier:
22212635
Resource Type:
Journal Article
Journal Name:
Physics of Atomic Nuclei
Additional Journal Information:
Journal Volume: 76; Journal Issue: 11; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; http://www.springer-ny.com; This record replaces 45033592; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7788
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALUMINIUM; BERYLLIUM; CARBON; COPPER; EXPERIMENTAL DATA; F2-1270 MESONS; GEV RANGE 01-10; HEAVY NUCLEI; HYPERONS; KAONS NEUTRAL; LEAD; MASS; MESON-NUCLEON INTERACTIONS; MEV RANGE; NUCLEAR MATTER; TIN

Citation Formats

. Measurement of neutral-meson masses in meson-nucleus interactions at a momentum of 7 GeV/c at the Hyperon-M setup. United States: N. p., 2013. Web. doi:10.1134/S1063778813110045.
. Measurement of neutral-meson masses in meson-nucleus interactions at a momentum of 7 GeV/c at the Hyperon-M setup. United States. https://doi.org/10.1134/S1063778813110045
. 2013. "Measurement of neutral-meson masses in meson-nucleus interactions at a momentum of 7 GeV/c at the Hyperon-M setup". United States. https://doi.org/10.1134/S1063778813110045.
@article{osti_22212635,
title = {Measurement of neutral-meson masses in meson-nucleus interactions at a momentum of 7 GeV/c at the Hyperon-M setup},
author = {},
abstractNote = {The π{sup 0}, η, K{sup 0}, ω, and f{sub 2}(1270) masses were measured at the HYPERON-Msetup in meson-nucleus interactions at a momentum of 7 GeV/c by using six nuclear targets: Be, C, Al, Cu, Sn, and Pb. The experiment in question proved to be insensitive to the expected effects of a modification to the omega-meson mass in nuclear matter. As for the f{sub 2}(1270) meson, its mass and width values averaged over all experimental data, <##>}m}f2$ m{sub {f_2 }} $m{sub f{sub 2}} = 1275.8 ± 1.0(stat.) ± 0.4(syst.) MeV/c{sup 2} and <##>}}Γ}f2$ /Gamma {sub {f_2 }} $Γ{sub f{sub 2}} = 190.3 ± 1.9(stat.) ± 1.8(syst.) MeV/c{sup 2}, agree well with the world-average values. At the same time, our experimental data do not rule out the possible effect of an in-medium modification to the f{sub 2}(1270)-meson mass for heavy nuclei at a level better than 0.4%.},
doi = {10.1134/S1063778813110045},
url = {https://www.osti.gov/biblio/22212635}, journal = {Physics of Atomic Nuclei},
issn = {1063-7788},
number = 11,
volume = 76,
place = {United States},
year = {Fri Nov 15 00:00:00 EST 2013},
month = {Fri Nov 15 00:00:00 EST 2013}
}