Description and interpretation of DVCS measurements - INSPIRE

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Description and interpretation of DVCS measurements

Krešimir Kumerički
(
- Zagreb U., Phys. Dept.
)
,
Dieter Müller
(
- Cape Town U. and
- Boskovic Inst., Zagreb
)

Dec 30, 2015

15 pages

Part of Proceedings, 6th International Conference on Physics Opportunities at an ElecTron-Ion Collider (POETIC 2015) : Palaiseau, France, September 7-11, 2015

Published in:

EPJ Web Conf. 112 (2016) 01012

Contribution to:

- POETIC6

Published: Mar 21, 2016

e-Print:

1512.09014 [hep-ph]

DOI:

10.1051/epjconf/201611201012

View in:

ADS Abstract Service

reference search62 citations

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Abstract: (arXiv)

Having in mind the well-known limitations of certain models of generalized parton distributions (GPDs), we show that the allegedly universal GPDs, describing both deeply virtual Compton scattering (DVCS) and deeply virtual meson production (DVMP) data, fail to describe measurements of deep inelastic scattering. We present a new global DVCS fit that describes reasonably the world data set, which includes now also new measurements from Hall A and CLAS collaborations. We also explicitly illustrate that Compton form factors (CFFs) cannot be unambiguously extracted from photon electroproduction measurements off unpolarized proton alone and we argue that it is more reliable to interpret such measurements in terms of certain CFF combinations, where still some care is needed in order to estimate the propagated error.

Note:

15 pages, 5 figures, contribution to the 6th International conference on Physics Opportunities at Electron-Ion colliders (POETIC6)

photon: electroproduction
meson: production
Compton scattering: form factor
propagation
deeply virtual Compton scattering
generalized parton distribution
deep inelastic scattering
CLAS

References(35)

Figures(7)

[1]

Compton scattering: from deeply virtual to quasi-real

Andrei V. Belitsky
(
- Arizona State U.
)
,
Dieter Müller
(
- Ruhr U., Bochum
)
,
Yao Ji
(
- Arizona State U.
)

- Nucl.Phys.B 878 (2014) 214-268
•
e-Print:
- 1212.6674
•
DOI:
- 10.1016/j.nuclphysb.2013.11.014

[2]

Simple parametrization of nucleon form factors

J.J. Kelly
(
- Maryland U.
)

- Phys.Rev.C 70 (2004) 068202
•
DOI:
- 10.1103/PhysRevC.70.068202

[3]

Theory of deeply virtual Compton scattering on the nucleon

Andrei V. Belitsky
(
- Maryland U. and
- SUNY, Stony Brook and
- Wuppertal U.
)
,
Dieter Mueller
(
- Wuppertal U. and
- Regensburg U.
)
,
A. Kirchner
(
- Regensburg U.
)

- Nucl.Phys.B 629 (2002) 323-392
•
e-Print:
- hep-ph/0112108
•
DOI:
- 10.1016/S0550-3213(02)00144-X

[4]

Single and double spin asymmetries for deeply virtual Compton scattering measured with CLAS and a longitudinally polarized proton target

CLAS

Collaboration

•

S. Pisano
(
- Frascati
)

et al.

- Phys.Rev.D 91 (2015) 5, 052014
•
e-Print:
- 1501.07052
•
DOI:
- 10.1103/PhysRevD.91.052014

[5]

Scaling tests of the cross-section for deeply virtual compton scattering

Collaborations

•

C. Muñoz Camacho
(
- SPhN, DAPNIA, Saclay
)

et al.

- Phys.Rev.Lett. 97 (2006) 262002
•
e-Print:
- nucl-ex/0607029
•
DOI:
- 10.1103/PhysRevLett.97.262002

[6]

E00-110 experiment at Jefferson Lab Hall A: Deeply virtual Compton scattering off the proton at 6 GeV

Jefferson Lab Hall A

Collaboration

•

M. Defurne
(
- DAPNIA, Saclay
)

et al.

- Phys.Rev.C 92 (2015) 5, 055202
•
e-Print:
- 1504.05453
•
DOI:
- 10.1103/PhysRevC.92.055202

[7]

Cross sections for the exclusive photon electroproduction on the proton and Generalized Parton Distributions

CLAS

Collaboration

•

H.S. Jo
(
- Orsay, IPN
)

et al.

- Phys.Rev.Lett. 115 (2015) 21, 212003
•
e-Print:
- 1504.02009
•
DOI:
- 10.1103/PhysRevLett.115.212003

[8]

From hard exclusive meson electroproduction to deeply virtual Compton scattering

Peter Kroll
(
- Regensburg U. and
- Wuppertal U.
)
,
Herve Moutarde
(
- IRFU, SPhN, Saclay
)
,
Franck Sabatie
(
- IRFU, SPhN, Saclay
)

- Eur.Phys.J.C 73 (2013) 1, 2278
•
e-Print:
- 1210.6975
•
DOI:
- 10.1140/epjc/s10052-013-2278-0

[9]

The Role of the quark and gluon GPDs in hard vector-meson electroproduction

S.V. Goloskokov
(
- Dubna, JINR
)
,
P. Kroll
(
- Wuppertal U.
)

- Eur.Phys.J.C 53 (2008) 367-384
•
e-Print:
- 0708.3569
•
DOI:
- 10.1140/epjc/s10052-007-0466-5

[10]

Deeply virtual electroproduction of photons and mesons on the nucleon: Leading order amplitudes and power corrections

M. Vanderhaeghen
(
- Mainz U., Inst. Kernphys.
)
,
Pierre A.M. Guichon
(
- Saclay
)
,
M. Guidal
(
- Orsay, IPN
)

- Phys.Rev.D 60 (1999) 094017
•
e-Print:
- hep-ph/9905372
•
DOI:
- 10.1103/PhysRevD.60.094017

[11]

Modeling generalized parton distributions to describe deeply virtual Compton scattering data

A. Freund
(
- Regensburg U.
)
,
M. McDermott
(
- Liverpool U., Dept. Math.
)
,
M. Strikman
(
- Penn State U.
)

- Phys.Rev.D 67 (2003) 036001
•
e-Print:
- hep-ph/0208160
•
DOI:
- 10.1103/PhysRevD.67.036001

[12]

New generation of parton distributions with uncertainties from global QCD analysis

J. Pumplin
(
- Michigan State U.
)
,
D.R. Stump
(
- Michigan State U.
)
,
J. Huston
(
- Michigan State U.
)
,
H.L. Lai
(
- Michigan State U.
)
,
Pavel M. Nadolsky
(
- Michigan State U.
)

et al.

- JHEP 07 (2002) 012
•
e-Print:
- hep-ph/0201195
•
DOI:
- 10.1088/1126-6708/2002/07/012

[13]

A Measurement and QCD analysis of the proton structure function f2 (x, q**2) at HERA

H1

Collaboration

•

S. Aid

et al.

- Nucl.Phys.B 470 (1996) 3-40
•
e-Print:
- hep-ex/9603004
•
DOI:
- 10.1016/0550-3213(96)00211-8

[14]

Deeply virtual Compton scattering at small $x_B$ and the access to the GPD H

Kresimir Kumerički
(
- Zagreb U.
)
,
Dieter Mueller
(
- Ruhr U., Bochum
)

- Nucl.Phys.B 841 (2010) 1-58
•
e-Print:
- 0904.0458
•
DOI:
- 10.1016/j.nuclphysb.2010.07.015

[15]

Beam-helicity asymmetry arising from deeply virtual Compton scattering measured with kinematically complete event reconstruction

HERMES

Collaboration

•

A. Airapetian
(
- Giessen U. and
- Michigan U.
)

et al.

- JHEP 10 (2012) 042
•
e-Print:
- 1206.5683
•
DOI:
- 10.1007/JHEP10(2012)042

[16]

Separation of contributions from deeply virtual Compton scattering and its interference with the Bethe-Heitler process in measurements on a hydrogen target

HERMES

Collaboration

•

A. Airapetian
(
- Giessen U. and
- Michigan U.
)

et al.

- JHEP 11 (2009) 083
•
e-Print:
- 0909.3587
•
DOI:
- 10.1088/1126-6708/2009/11/083

[17]

HERMES impact for the access of Compton form factors

Kresimir Kumerički
(
- Zagreb U., Phys. Dept.
)
,
Dieter Müller
(
- Ruhr U., Bochum
)
,
Morgan Murray
(
- Glasgow U.
)

- Phys.Part.Nucl. 45 (2014) 4, 723-755
•
e-Print:
- 1301.1230
•
DOI:
- 10.1134/S1063779614040108

[18]

Measurement of deeply virtual compton scattering with a polarized proton target

CLAS

Collaboration

•

S. Chen
(
- Florida State U.
)

et al.

- Phys.Rev.Lett. 97 (2006) 072002
•
e-Print:
- hep-ex/0605012
•
DOI:
- 10.1103/PhysRevLett.97.072002

[19]

A Measurement of the Q**2, W and t dependences of deeply virtual Compton scattering at HERA

ZEUS

Collaboration

•

S. Chekanov
(
- Argonne
)

et al.

- JHEP 05 (2009) 108
•
e-Print:
- 0812.2517
•
DOI:
- 10.1088/1126-6708/2009/05/108

[20]

Measurement of deeply virtual Compton scattering at HERA

ZEUS

Collaboration

•

S. Chekanov
(
- Argonne
)

et al.

- Phys.Lett.B 573 (2003) 46-62
•
e-Print:
- hep-ex/0305028
•
DOI:
- 10.1016/j.physletb.2003.08.048

[21]

Deeply Virtual Compton Scattering and its Beam Charge Asymmetry in e+- Collisions at HERA

H1

Collaboration

•

F.D. Aaron
(
- Bucharest, IFIN-HH and
- Bucharest U.
)

et al.

- Phys.Lett.B 681 (2009) 391-399
•
e-Print:
- 0907.5289
•
DOI:
- 10.1016/j.physletb.2009.10.035

[22]

Measurement of deeply virtual compton scattering at HERA

H1

Collaboration

•

A. Aktas

et al.

- Eur.Phys.J.C 44 (2005) 1-11
•
e-Print:
- hep-ex/0505061
•
DOI:
- 10.1140/epjc/s2005-02345-3

[23]

Beam-helicity and beam-charge asymmetries associated with deeply virtual Compton scattering on the unpolarised proton

HERMES

Collaboration

•

A. Airapetian
(
- Giessen U. and
- Michigan U.
)

et al.

- JHEP 07 (2012) 032
•
e-Print:
- 1203.6287
•
DOI:
- 10.1007/JHEP07(2012)032

[24]

Measurement of Deeply virtual Compton scattering beam-spin asymmetries

CLAS

Collaboration

•

F.X. Girod
(
- SPhN, DAPNIA, Saclay and
- Jefferson Lab
)

et al.

- Phys.Rev.Lett. 100 (2008) 162002
•
e-Print:
- 0711.4805
•
DOI:
- 10.1103/PhysRevLett.100.162002

[25]

Beam spin asymmetries in deeply virtual Compton scattering (DVCS) with CLAS at 4.8 GeV

CLAS

Collaboration

•

G. Gavalian
(
- New Hampshire U. and
- Old Dominion U.
)

et al.

- Phys.Rev.C 80 (2009) 035206
•
e-Print:
- 0812.2950
•
DOI:
- 10.1103/PhysRevC.80.035206

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