
Article
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/