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Light vector mesons in the nuclear medium
Physical Review C (2008)
  • MH Wood
  • R Nasseripour
  • DP Weygand
  • C Djalali
  • C Tur
  • U Mosel
  • P Muehlich
  • G Adams
  • MJ Amaryan
  • P Ambrozewicz
  • M Anghinolfi
  • G Asryan
  • H Avakian
  • H Bagdasaryan
  • N Baillie
  • JP Ball
  • NA Baltzell
  • S Barrow
  • M Battaglieri
  • I Bedlinskiy
  • M Bektasoglu
  • M Bellis
  • N Benmouna
  • BL Berman
  • AS Biselli
  • L Blaszczyk
  • S Bouchigny
  • S Boiarinov
  • R Bradford
  • D Branford
  • WJ Briscoe
  • WK Brooks
  • VD Burkert
  • C Butuceanu
  • JR Calarco
  • SL Careccia
  • DS Carman
  • B Carnahan
  • L Casey
  • S Chen
  • L Cheng
  • PL Cole
  • P Collins
  • P Coltharp
  • D Crabb
  • H Crannell
  • V Crede
  • JP Cummings
  • N Dashyan
  • R De Vita
  • E De Sanctis
  • PV Degtyarenko
  • H Denizli
  • L Dennis
  • A Deur
  • KV Dharmawardane
  • R Dickson
  • GE Dodge
  • D Doughty
  • M Dugger
  • S Dytman
  • OP Dzyubak
  • H Egiyan
  • KS Egiyan
  • L El Fassi
  • L Elouadrhiri
  • P Eugenio
  • G Fedotov
  • G Feldman
  • RJ Feuerbach
  • A Fradi
  • H Funsten
  • MG On
  • G Gavalian
  • GP Gilfoyle
  • KL Giovanetti
  • FX Girod
  • JT Goetz
  • CIO Gordon
  • RW Gothe
  • KA Griffioen
  • M Guidal
  • N Guler
  • L Guo
  • V Gyurjyan
  • C Hadjidakis
  • K Hafidi
  • H Hakobyan
  • RS Hakobyan
  • C Hanretty
  • J Hardie
  • N Hassall
  • FW Hersman
  • K Hicks
  • I Hleiqawi
  • M Holtrop
  • CE Hyde-Wright
  • Y Ilieva
  • DG Ireland
  • BS Ishkhanov
  • EL Isupov
  • MM Ito
  • D Jenkins
  • HS Jo
  • JR Johnstone
  • K Joo
  • HG Juengst
  • N Kalantarians
  • JD Kellie
  • M Khandaker
  • P Khetarpal
  • W Kim
  • A Klein
  • FJ Klein
  • AV Klimenko
  • M Kossov
  • Z Krahn
  • LH Kramer
  • V Kubarovsky
  • J Kuhn
  • SE Kuhn
  • SV Kuleshov
  • J Lachniet
  • JM Laget
  • J Langheinrich
  • D Lawrence
  • J Li
  • K Livingston
  • HY Lu
  • M MacCormick
  • N Markov
  • P Mattione
  • S McAleer
  • B McKinnon
  • JWC McNabb
  • BA Mecking
  • S Mehrabyan
  • JJ Melone
  • MD Mestayer
  • CA Meyer
  • T Mibe
  • K Mikhailov
  • R Minehart
  • M Mirazita
  • R Miskimen
  • V Mokeev
  • K Moriya
  • SA Morrow
  • M Moteabbed
  • J Mueller
  • E Munevar
  • GS Mutchler
  • P Nadel-Turonski
  • S Niccolai
  • G Niculescu
  • I Niculescu
  • BB Niczyporuk
  • MR Niroula
  • RA Niyazov
  • M Nozar
  • M Osipenko
  • AI Ostrovidov
  • K Park
  • E Pasyuk
  • C Paterson
  • SA Pereira
  • J Pierce
  • N Pivnyuk
  • D Pocanic
  • O Pogorelko
  • S Pozdniakov
  • BM Preedom
  • JW Price
  • Y Prok
  • D Protopopescu
  • BA Raue
  • G Riccardi
  • G Ricco
  • M Ripani
  • BG Ritchie
  • F Ronchetti
  • G Rosner
  • P Rossi
  • F Sabatie
  • J Salamanca
  • C Salgado
  • JP Santoro
  • V Sapunenko
  • RA Schumacher
  • VS Serov
  • YG Sharabian
  • D Sharov
  • NV Shvedunov
  • ES Smith
  • LC Smith
  • DI Sober
  • D Sokhan
  • A Stavinsky
  • S Stepanyan
  • SS Stepanyan
  • BE Stokes
  • P Stoler
  • II Strakovsky
  • S Strauch
  • M Taiuti
  • DJ Tedeschi
  • A Tkabladze
  • S Tkachenko
  • L Todor
  • M Ungaro
  • MF Vineyard
  • AV Vlassov
  • DP Watts
  • LB Weinstein
  • M Williams, University of Massachusetts - Amherst
  • E Wolin
  • A Yegneswaran
  • L Zana
  • B Zhang
  • J Zhang
  • B Zhao
  • ZW Zhao
Abstract
The light vector mesons (ρ,ω, and ϕ) were produced in deuterium, carbon, titanium, and iron targets in a search for possible in-medium modifications to the properties of the ρ meson at normal nuclear densities and zero temperature. The vector mesons were detected with the CEBAF Large Acceptance Spectrometer (CLAS) via their decays to e+e-. The rare leptonic decay was chosen to reduce final-state interactions. A combinatorial background was subtracted from the invariant mass spectra using a well-established event-mixing technique. The ρ-meson mass spectrum was extracted after the ω and ϕ signals were removed in a nearly model-independent way. Comparisons were made between the ρ mass spectra from the heavy targets (A>2) with the mass spectrum extracted from the deuterium target. With respect to the ρ-meson mass, we obtain a small shift compatible with zero. Also, we measure widths consistent with standard nuclear many-body effects such as collisional broadening and Fermi motion.
Disciplines
Publication Date
January 1, 2008
Publisher Statement
Doi:10.1103/PhysRevC.78.015201 Copyright 2008 by The American Physical Society. http://prc.aps.org/pdf/PRC/v78/i1/e015201
Citation Information
MH Wood, R Nasseripour, DP Weygand, C Djalali, et al.. "Light vector mesons in the nuclear medium" Physical Review C Vol. 78 Iss. 1 (2008)
Available at: http://works.bepress.com/michael_williams/3/