Measurement of $D^{\ast}$ photoproduction at three different centre-of-mass energies at HERA

mesons were required to have transverse momentum, p_{T}^{D}^{ ∗} , and pseudo-rapidity, η^{D}^{∗}, in the ranges 1.9 < p_{T}^{D}^{ ∗} < 20 GeV and |η^{D}^{∗}| < 1.6. The events were required to have a virtuality of the incoming photon, Q

^{2}

, of less than 1 GeV

^{2}

. The dependence on

\sqrt{s}

was studied by normalising to the high-statistics measurement at

\sqrt{s}=318

GeV. This led to the cancellation of a number of systematic effects both in data and theory. Predictions from next-to-leading-order QCD describe the

\sqrt{s}

dependence of the data well.

Note:

17 pages, 7 figures, accepted by JHEP. Updated version includes comments from journal referee

Lepton-Nucleon Scattering
QCD
Heavy quark production
Charm physics
higher-order: 1
D*(2010): photoproduction
DESY HERA Stor
quantum chromodynamics
transverse momentum
rapidity

References(55)

Figures(0)

[1]

The accelerated scaling attractor solution of the interacting agegraphic dark energy in Brans-Dicke theory

Xian-Ming Liu
(
- Enshi, Inst. Nationalities and
- Beijing Normal U.
)
,
Zhong-Xu Zhai
(
- Beijing Normal U.
)
,
Kui Xiao
(
- Hunan Inst. Humanities Sci. Tech.
)
,
Wen-Biao Liu
(
- Beijing Normal U.
)

- Eur.Phys.J.C 72 (2012) 2057
•
e-Print:
- 1206.1911
•
DOI:
- 10.1140/epjc/s10052-012-2057-3

[1]

H1 Collab

F.D. Aaron

- Eur.Phys.J.C 72 (2012) 159

[1]

Inclusive D+- Meson Cross Sections and D+- Jet Correlations in Photoproduction at HERA

H1

Collaboration

•

A. Aktas

et al.

- Eur.Phys.J.C 50 (2007) 251-267
•
e-Print:
- hep-ex/0608042
•
DOI:
- 10.1140/epjc/s10052-007-0220-z

[1]

Measurement of charm and beauty dijet cross-sections in photoproduction at HERA using the H1 vertex detector

H1

Collaboration

•

A. Aktas

et al.

- Eur.Phys.J.C 47 (2006) 597-610
•
e-Print:
- hep-ex/0605016
•
DOI:
- 10.1140/epjc/s2006-02616-5

[1]

Measurement of charm and beauty photoproduction at HERA using D* mu correlations

H1

Collaboration

•

A. Aktas

et al.

- Phys.Lett.B 621 (2005) 56-71
•
e-Print:
- hep-ex/0503038
•
DOI:
- 10.1016/j.physletb.2005.06.040

[1]

Photoproduction of D*+- mesons in electron - proton collisions at HERA

H1

Collaboration

•

S. Aid

et al.

- Nucl.Phys.B 472 (1996) 32-54
•
e-Print:
- hep-ex/9604005
•
DOI:
- 10.1016/0550-3213(96)00275-1

[1]

Production of the excited charm mesons $D_1$ and $D^*_2$ at HERA

ZEUS

Collaboration

•

H. Abramowicz
(
- Tel Aviv U.
)

et al.

- Nucl.Phys.B 866 (2013) 229-254
•
e-Print:
- 1208.4468
•
DOI:
- 10.1016/j.nuclphysb.2012.09.007

[1]

Production of excited charm and charm-strange mesons at HERA

ZEUS

Collaboration

•

S. Chekanov
(
- Argonne
)

et al.

- Eur.Phys.J.C 60 (2009) 25-45
•
e-Print:
- 0807.1290
•
DOI:
- 10.1140/epjc/s10052-009-0881-x

[1]

Inclusive jet cross sections and dijet correlations in D*+- photoproduction at HERA

ZEUS

Collaboration

•

S. Chekanov
(
- Argonne
)

et al.

- Nucl.Phys.B 729 (2005) 492-525
•
e-Print:
- hep-ex/0507089
•
DOI:
- 10.1016/j.nuclphysb.2005.09.021

[1]

Dijet angular distributions in photoproduction of charm at HERA

ZEUS

Collaboration

•

S. Chekanov
(
- Argonne
)

et al.

- Phys.Lett.B 565 (2003) 87-101
•
e-Print:
- hep-ex/0302025
•
DOI:
- 10.1016/S0370-2693(03)00752-4

[1]

Measurement of inclusive D+-(s) photoproduction at HERA

ZEUS

Collaboration

•

J. Breitweg
(
- Argonne
)

et al.

- Phys.Lett.B 481 (2000) 213-227
•
e-Print:
- hep-ex/0003018
•
DOI:
- 10.1016/S0370-2693(00)00431-7

[1]

Measurement of inclusive D*+- and associated dijet cross-sections in photoproduction at HERA

ZEUS

Collaboration

•

J. Breitweg
(
- Argonne
)

et al.

- Eur.Phys.J.C 6 (1999) 67-83
•
e-Print:
- hep-ex/9807008
•
DOI:
- 10.1007/s100529801017

[1]

Differential cross-sections of D*+- photoproduction in e p collisions at HERA

ZEUS

Collaboration

•

J. Breitweg
(
- Argonne
)

et al.

- Phys.Lett.B 401 (1997) 192-206
•
e-Print:
- hep-ex/9704011
•
DOI:
- 10.1016/S0370-2693(97)00422-X

[1]

Study of D*+- (2010) production in e p collisions at HERA

ZEUS

Collaboration

•

M. Derrick
(
- Argonne, PHY
)

et al.

- Phys.Lett.B 349 (1995) 225-237
•
e-Print:
- hep-ex/9502002
•
DOI:
- 10.1016/0370-2693(95)00253-H

[2]

Measurement of heavy-quark jet photoproduction at HERA

ZEUS

Collaboration

•

H. Abramowicz
(
- Tel Aviv U.
)

et al.

- Eur.Phys.J.C 71 (2011) 1659
•
e-Print:
- 1104.5444
•
DOI:
- 10.1140/epjc/s10052-011-1659-5

[3]

Beauty photoproduction using decays into electrons at HERA

ZEUS

Collaboration

•

S. Chekanov
(
- Argonne
)

et al.

- Phys.Rev.D 78 (2008) 072001
•
e-Print:
- 0805.4390
•
DOI:
- 10.1103/PhysRevD.78.072001

[4]

ZEUS Collab The ZEUS Detector. Status Report (unpublished), DESY

U. Holm

[5]

Vertex Triggering Using Time Difference Measurements in the ZEUS Central Tracking Detector

N. Harnew
(
- Bristol U. and
- Oxford U. and
- Rutherford
)
,
G.P. Heath
(
- Bristol U. and
- Oxford U. and
- Rutherford
)
,
M.D. Jeffs
(
- Bristol U. and
- Oxford U. and
- Rutherford
)
,
J. Nash
(
- Bristol U. and
- Oxford U. and
- Rutherford
)
,
G. Salmon
(
- Bristol U. and
- Oxford U. and
- Rutherford
)

et al.

- Nucl.Instrum.Meth.A 279 (1989) 290-296
•
DOI:
- 10.1016/0168-9002(89)91096-6

[5]

The Performance of the Zeus central tracking detector z-by-timing electronics in a transputer based data acquisition system

et al.

- Nucl.Phys.B Proc.Suppl. 32 (1993) 181-188,
- In *Como 1992, Proceedings, Advanced technology and particle physics* 181-188,
- Nucl. Phys. B, Proc. Suppl. 32 (1993) 181-188) and Oxford Univ. - OUNP-92-14 (92,rec.Oct.) 8 p
•
DOI:
- 10.1016/0920-5632(93)90023-Y