Measurement of deeply virtual compton scattering with a polarized-proton target.
نویسندگان
- S Chen
- H Avakian
- V D Burkert
- P Eugenio
- G Adams
- M Amarian
- P Ambrozewicz
- M Anghinolfi
- G Asryan
- H Bagdasaryan
- N Baillie
- J P Ball
- N A Baltzell
- S Barrow
- V Batourine
- M Battaglieri
- K Beard
- I Bedlinskiy
- M Bektasoglu
- M Bellis
- N Benmouna
- B L Berman
- A S Biselli
- B E Bonner
- S Bouchigny
- S Boiarinov
- P Bosted
- R Bradford
- D Branford
- W J Briscoe
- W K Brooks
- S Bültmann
- C Butuceanu
- J R Calarco
- S L Careccia
- D S Carman
- B Carnahan
- A Cazes
- P L Cole
- P Collins
- P Coltharp
- D Cords
- P Corvisiero
- D Crabb
- H Crannell
- V Crede
- J P Cummings
- R DeMasi
- R DeVita
- E De Sanctis
- P V Degtyarenko
- H Denizli
- L Dennis
- A Deur
- K V Dharmawardane
- K S Dhuga
- C Djalali
- G E Dodge
- J Donnelly
- D Doughty
- M Dugger
- S Dytman
- O P Dzyubak
- H Egiyan
- K S Egiyan
- L El Fassi
- L Elouadrhiri
- R Fatemi
- G Fedotov
- G Feldman
- R J Feuerbach
- T A Forest
- H Funsten
- M Garçon
- G Gavalian
- G P Gilfoyle
- K L Giovanetti
- F X Girod
- J T Goetz
- E Golovatch
- A Gonenc
- R W Gothe
- K A Griffioen
- M Guidal
- M Guillo
- N Guler
- L Guo
- V Gyurjyan
- C Hadjidakis
- K Hafidi
- H Hakobyan
- R S Hakobyan
- J Hardie
- D Heddle
- F W Hersman
- K Hicks
- I Hleiqawi
- M Holtrop
- M Huertas
- C E Hyde-Wright
- Y Ilieva
- D G Ireland
- B S Ishkhanov
- E L Isupov
- M M Ito
- D Jenkins
- H S Jo
- K Joo
- H G Juengst
- C Keith
- J D Kellie
- M Khandaker
- K Y Kim
- K Kim
- W Kim
- A Klein
- F J Klein
- M Klusman
- M Kossov
- L H Kramer
- V Kubarovsky
- J Kuhn
- S E Kuhn
- S V Kuleshov
- J Lachniet
- J M Laget
- J Langheinrich
- D Lawrence
- Ji Li
- A C S Lima
- K Livingston
- H Lu
- K Lukashin
- M MacCormick
- N Markov
- S McAleer
- B McKinnon
- J W C McNabb
- B A Mecking
- M D Mestayer
- C A Meyer
- T Mibe
- K Mikhailov
- R Minehart
- M Mirazita
- R Miskimen
- V Mokeev
- L Morand
- S A Morrow
- M Moteabbed
- J Mueller
- G S Mutchler
- P Nadel-Turonski
- J Napolitano
- R Nasseripour
- N Natasha
- S Niccolai
- G Niculescu
- I Niculescu
- B B Niczyporuk
- M R Niroula
- R A Niyazov
- M Nozar
- G V O'Rielly
- M Osipenko
- A I Ostrovidov
- K Park
- E Pasyuk
- C Paterson
- S A Philips
- J Pierce
- N Pivnyuk
- D Pocanic
- O Pogorelko
- E Polli
- I Popa
- S Pozdniakov
- B M Preedom
- J W Price
- Y Prok
- D Protopopescu
- L M Qin
- B A Raue
- G Riccardi
- G Ricco
- M Ripani
- B G Ritchie
- F Ronchetti
- G Rosner
- P Rossi
- D Rowntree
- P D Rubin
- F Sabatié
- C Salgado
- J P Santoro
- V Sapunenko
- R A Schumacher
- V S Serov
- Y G Sharabian
- J Shaw
- N V Shvedunov
- A V Skabelin
- E S Smith
- L C Smith
- D I Sober
- A Stavinsky
- S S Stepanyan
- S Stepanyan
- B E Stokes
- P Stoler
- I I Strakovsky
- S Strauch
- R Suleiman
- M Taiuti
- D J Tedeschi
- U Thoma
- A Tkabladze
- S Tkachenko
- L Todor
- C Tur
- M Ungaro
- M Vanderhaeghen
- M F Vineyard
- A V Vlassov
- D P Watts
- L B Weinstein
- D P Weygand
- M Williams
- E Wolin
- M H Wood
- A Yegneswaran
- J Yun
- L Zana
- J Zhang
- B Zhao
- Z Zhao
چکیده
The longitudinal target-spin asymmetry AUL for the exclusive electroproduction of high-energy photons was measured for the first time in ep-->e;'pgamma. The data have been accumulated at JLab with the CLAS spectrometer using 5.7 GeV electrons and a longitudinally polarized NH3 target. A significant azimuthal angular dependence was observed, resulting from the interference of the deeply virtual Compton scattering and Bethe-Heitler processes. The amplitude of the sinvarphi moment is 0.252+/-0.042stat+/-0.020sys. Theoretical calculations are in good agreement with the magnitude and the kinematic dependence of the target-spin asymmetry, which is sensitive to the generalized parton distributions H and H.
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عنوان ژورنال:
- Physical review letters
دوره 97 7 شماره
صفحات -
تاریخ انتشار 2006