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26 April 2024

» pubmed » pmid11690264

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Photoproduction of the rho(0) meson on the proton at large momentum transfer
M Battaglieri ; E Anciant ; M Anghinolfi ; R De Vita ; E Golovach ; J M Laget ; V Mokeev ; M Ripani ; G Adams ; M J Amaryan ; D S Armstrong ; B Asavapibhop ; G Asryan ; G Audit ; T Auger ; H Avakian ; S Barrow ; K Beard ; M Bektasoglu ; B L Berman ; N Bianchi ; A S Biselli ; S Boiarinov ; D Branford ; W J Briscoe ; W K Brooks ; V D Burkert ; J R Calarco ; G P Capitani ; D S Carman ; B Carnahan ; A Cazes ; C Cetina ; P L Cole ; A Coleman ; D Cords ; P Corvisiero ; D Crabb ; H Crannell ; J P Cummings ; E DeSanctis ; P V Degtyarenko ; R Demirchyan ; H Denizli ; L Dennis ; K V Dharmawardane ; K S Dhuga ; C Djalali ; G E Dodge ; D Doughty ; P Dragovitsch ; M Dugger ; S Dytman ; M Eckhause ; H Egiyan ; K S Egiyan ; L Elouadrhiri ; L Farhi ; R J Feuerbach ; J Ficenec ; T A Forest ; A P Freyberger ; V Frolov ; H Funsten ; S J Gaff ; M Gai ; S Gilad ; G P Gilfoyle ; K L Giovanetti ; K Griffioen ; M Guidal ; M Guillo ; V Gyurjyan ; D Hancock ; J Hardie ; D Heddle ; F W Hersman ; K Hicks ; R S Hicks ; M Holtrop ; C E Hyde-Wright ; M M Ito ; K Joo ; J H Kelley ; M Khandaker ; W Kim ; A Klein ; F J Klein ; M Klusman ; M Kossov ; L H Kramer ; Y Kuang ; S E Kuhn ; D Lawrence ; M Lucas ; K Lukashin ; R W Major ; J J Manak ; C March ; S McAleer ; J McCarthy ; J W McNabb ; B A Mecking ; M D Mestayer ; C A Meyer ; K Mikhailov ; R Minehart ; M Mirazita ; R Miskimen ; V Muccifora ; J Mueller ; G S Mutchler ; J Napolitano ; S O Nelson ; B B Niczyporuk ; R A Niyazov ; J T O’Brien ; A K Opper ; G Peterson ; S A Philips ; N Pivnyuk ; D Pocanic ; O Pogorelko ; E Polli ; B M Preedom ; J W Price ; D Protopopescu ; L M Qin ; B A Raue ; A R Reolon ; G Riccardi ; G Ricco ; B G Ritchie ; F Ronchetti ; P Rossi ; D Rowntree ; P D Rubin ; K Sabourov ; C Salgado ; M Sanzone-Arenhovel ; V Sapunenko ; R A Schumacher ; V S Serov ; A Shafi ; Y G Sharabian ; J Shaw ; A V Skabelin ; E S Smith ; T Smith ; L C Smith ; D I Sober ; M Spraker ; A Stavinsky ; S Stepanyan ; P Stoler ; M Taiuti ; S Taylor ; D J Tedeschi ; L Todor ; R Thompson ; M F Vineyard ; A V Vlassov ; L B Weinstein ; A Weisberg ; H Weller ; D P Weyg ; C S Whisnant ; E Wolin ; M Wood ; A Yegneswaran ; J Yun ; B Zhang ; J Zhao ; Z Zhou ; ;
Date:	22 Oct 2001
Journal:	Phys Rev Lett, 87 (17), 172002
Abstract:	The differential cross section, d sigma/dt, for rho(0) meson photoproduction on the proton above the resonance region was measured up to a momentum transfer -t = 5 GeV2 using the CLAS detector at the Thomas Jefferson National Accelerator Facility. The rho(0) channel was extracted from the measured two charged-pion cross sections by fitting the pi(+)pi(-) and p pi(+) invariant masses. The low momentum transfer region shows the typical diffractive pattern expected from Reggeon exchange. The flatter behavior at large -t cannot be explained solely in terms of QCD-inspired two-gluon exchange models. The data indicate that other processes, like quark interchange, are important to fully describe rho photoproduction.
Source:	PubMed, pmid11690264
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