Towards a fitting procedure for deeply virtual Compton scattering at next-to-leading order and beyond

被引：115
作者：
Kumericki, K. [2 ,3 ]
Mueller, D. [3 ,4 ,5 ]
Passek-Kumericki, K. [1 ]
机构：
[1] Rudjer Boskovic Inst, Div Theoret Phys, HR-10002 Zagreb, Croatia
[2] Univ Zagreb, Fac Sci, Dept Phys, HR-10002 Zagreb, Croatia
[3] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany
[4] Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA
[5] Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany
来源：
NUCLEAR PHYSICS B | 2008年 / 794卷 / 1-2期
基金：
美国国家科学基金会;
关键词：
deeply virtual Compton scattering; next-to-next-to-leading order corrections; fitting procedure; generalized parton distributions; Conformal symmetry;
D O I：
10.1016/j.nuclphysb.2007.10.029
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
Combining dispersion and operator product expansion techniques, we derive the conformal partial wave decomposition of the virtual Compton scattering amplitude in terms of complex conformal spin to twist-two accuracy. The perturbation theory predictions for the deeply virtual Compton scattering (DVCS) amplitude are presented in next-to-leading order for both conformal and modified minimal subtraction scheme. Within a conformal subtraction scheme, where we exploit predictive power of conformal symmetry, the radiative corrections are presented up to next-to-next-to-leading order accuracy. Here, because of the trace anomaly, the mixing of conformal moments of generalized parton distributions (GPD) at the three-loop level remains unknown. Within a new proposed parameterization for GPDs, we then study the convergence of perturbation theory and demonstrate that our formalism is suitable for a fitting procedure of DVCS observables. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：244 / 323
页数：80
相关论文
共 183 条
  • [1] Elastic photoproduction of J/ψ and γ mesons at HERA
    Adloff, C
    Andreev, V
    Andrieu, B
    Arkadov, V
    Astvatsatourov, A
    Ayyaz, I
    Babaev, A
    Bähr, J
    Baranov, P
    Barrelet, E
    Bartel, W
    Bassler, U
    Bate, P
    Beglarian, A
    Behnke, O
    Beier, C
    Belousov, A
    Benisch, T
    Berger, C
    Bernardi, G
    Berndt, T
    Bizot, JC
    Borras, K
    Boudry, V
    Braunschweig, W
    Brisson, V
    Bröker, HB
    Brown, DP
    Brückner, W
    Bruel, P
    Bruncko, D
    Bürger, J
    Büsser, FW
    Bunyatyan, A
    Burkhardt, H
    Burrage, A
    Buschhorn, G
    Campbell, AJ
    Cao, J
    Carli, T
    Caron, S
    Chabert, E
    Clarke, D
    Clerbaux, B
    Collard, C
    Contreras, JG
    Coughlan, JA
    Cousinou, MC
    Cox, BE
    Cozzika, G
    [J]. PHYSICS LETTERS B, 2000, 483 (1-3) : 23 - 35
  • [2] Adloff C, 2000, EUR PHYS J C, V13, P371, DOI 10.1007/s100520000150
  • [3] Measurement of deeply virtual Compton scattering at HERA
    Adloff, C
    Andreev, V
    Andrieu, B
    Anthonis, T
    Arkadov, V
    Astvatsatourov, A
    Babaev, A
    Bähr, J
    Baranov, P
    Barrelet, E
    Bartel, W
    Bate, P
    Beglarian, A
    Behnke, O
    Beier, C
    Belousov, A
    Benisch, T
    Berger, C
    Berndt, T
    Bizot, JC
    Boudry, V
    Braunschweig, W
    Brisson, V
    Bröker, HB
    Brown, DP
    Brückner, W
    Bruncko, D
    Bürger, J
    Büsser, FW
    Bunyatyan, A
    Burrage, A
    Buschhorn, G
    Bystritskaya, L
    Campbell, AJ
    Cao, J
    Caron, S
    Clarke, D
    Clerbaux, B
    Collard, C
    Contreras, JG
    Coppens, YR
    Coughlan, JA
    Cousinou, MC
    Cox, BE
    Cozzika, G
    Cvach, J
    Dainton, JB
    Dau, WD
    Daum, K
    Davidsson, M
    [J]. PHYSICS LETTERS B, 2001, 517 (1-2) : 47 - 58
  • [4] Generalized parton distributions from hadronic observables: Zero skewness
    Ahmad, Saeed
    Honkanen, Heli
    Liuti, Simonetta
    Taneja, Swadhin K.
    [J]. PHYSICAL REVIEW D, 2007, 75 (09):
  • [5] A measurement and QCD analysis of the proton structure function F-2(x,Q(2)) at HERA
    Aid, S
    Andreev, V
    Andrieu, B
    Appuhn, RD
    Arpagaus, M
    Babaev, A
    Bahr, J
    Ban, J
    Ban, Y
    Baranov, P
    Barrelet, E
    Barschke, R
    Bartel, W
    Barth, M
    Bassler, U
    Beck, HP
    Behrend, HJ
    Belousov, A
    Berger, C
    Bernardi, G
    Bernet, R
    BertrandCoremans, G
    Besancon, M
    Beyer, R
    Biddulph, P
    Bispham, P
    Bizot, JC
    Blobel, V
    Borras, K
    Botterweck, F
    Boudry, V
    Braemer, A
    Braunschweig, W
    Brisson, V
    Bruncko, D
    Brune, C
    Buchholz, R
    Bungener, L
    Burger, J
    Busser, FW
    Buniatian, A
    Burke, S
    Burton, MJ
    Buschhorn, G
    Campbell, AJ
    Carli, T
    Charles, F
    Charlet, M
    Clarke, D
    Clegg, AB
    [J]. NUCLEAR PHYSICS B, 1996, 470 (1-2) : 3 - 38
  • [6] Longitudinal spin transfer to the Λ hyperon in semiinclusive deep-inelastic scattering
    Airapetian, A.
    Akopov, N.
    Akopov, Z.
    Amarian, M.
    Andrus, A.
    Aschenauer, E. C.
    Augustyniak, W.
    Avakian, R.
    Avetissian, A.
    Avetissian, E.
    Bailey, P.
    Balin, D.
    Beckmann, M.
    Belostotski, S.
    Bianchi, N.
    Blok, H. P.
    Boettcher, H.
    Borissov, A.
    Borysenko, A.
    Bouwhuis, M.
    Bruell, A.
    Bryzgalov, V.
    Capiluppi, M.
    Capitani, G. P.
    Chen, T.
    Chen, X.
    Chiang, H. C.
    Ciullo, G.
    Contalbrigo, M.
    Dalpiaz, P. F.
    Deconinck, W.
    De Leo, R.
    Demey, M.
    De Nardo, L.
    De Sanctis, E.
    Devitsin, E.
    Diefenthaler, M.
    Di Nezza, P.
    Dreschler, J.
    Dueren, M.
    Ehrenfried, M.
    Elalaoui-Moulay, A.
    Elbakian, G.
    Ellinghaus, F.
    Elschenbroich, U.
    Fabbri, R.
    Fantoni, A.
    Felawka, L.
    Frullani, S.
    Funel, A.
    [J]. PHYSICAL REVIEW D, 2006, 74 (07):
  • [7] Measurement of the beam-spin azimuthal asymmetry associated with deeply-virtual Compton scattering -: art. no. 182001
    Airapetian, A
    Akopov, N
    Akopov, Z
    Amarian, M
    Achenauer, EC
    Avakian, H
    Avakian, R
    Avetissian, A
    Avetissian, E
    Bailey, P
    Bains, B
    Baturin, V
    Baumgarten, C
    Beckmann, M
    Belostotski, S
    Bernreuther, S
    Bianchi, N
    Böttcher, H
    Borissov, A
    Bouhali, O
    Bouwhuis, M
    Brack, J
    Brauksiepe, S
    Brückner, W
    Brüll, A
    Brunn, I
    Bulten, HJ
    Capitani, GP
    Chumney, P
    Cisbani, E
    Ciullo, G
    Court, GR
    Dalpiaz, PF
    De Leo, R
    De Nardo, L
    De Sanctis, E
    De Schepper, D
    Devitsin, E
    Huberts, PKAD
    Di Nezza, P
    Düren, M
    Ehrenfried, M
    Elbakian, G
    Ellinghaus, F
    Ely, J
    Fabbri, R
    Fantoni, A
    Fechtchenko, A
    Felawka, L
    Filippone, BW
    [J]. PHYSICAL REVIEW LETTERS, 2001, 87 (18) : 182001 - 182001
  • [8] Measurement of deeply virtual Compton scattering at HERA
    Aktas, A
    Andreev, V
    Anthonis, T
    Aplin, S
    Asmone, A
    Astvatsatourov, A
    Babaev, A
    Backovic, S
    Bähr, J
    Baghdasaryan, A
    Baranov, P
    Barrelet, E
    Bartel, W
    Baudrand, S
    Baumgartner, S
    Becker, J
    Beckingham, M
    Behnke, O
    Behrendt, O
    Belousov, A
    Berger, C
    Berger, N
    Bizot, JC
    Boenig, MO
    Boudry, V
    Bracinik, J
    Brandt, G
    Brisson, V
    Brown, DP
    Bruncko, D
    Büsser, FW
    Bunyatyan, A
    Buschhorn, G
    Bystritskaya, L
    Campbell, AJ
    Caron, S
    Cassol-Brunner, F
    Cerny, K
    Cerny, V
    Chekelian, V
    Contreras, JG
    Coughlan, JA
    Cox, BE
    Cozzika, G
    Cvach, J
    Dainton, JB
    Dau, WD
    Daum, K
    de Boer, Y
    Delcourt, B
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2005, 44 (01): : 1 - 11
  • [9] Parton distribution functions from the precise NNLO QCD fit
    Alekhin, SI
    [J]. JETP LETTERS, 2005, 82 (10) : 628 - 631
  • [10] Parton distributions from deep-inelastic-scattering data
    Alekhin, SI
    [J]. PHYSICAL REVIEW D, 2003, 68 (01):
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