Inclusive production of D*+- mesons in photon-photon collisions at S**(1/2)(ee) = 183-GeV and 189-GeV and a first measurement of F**gamma(2,c)

The inclusive production of D*+- mesons in photon-photon collisions has been measured using the OPAL detector at LEP at e+e- centre-of-mass energies of 183 and 189GeV. The D* mesons are reconstructed in their decay to D0pi+ with the D0 observed in the two decay modes Kpi+ and Kpi+pi-pi+. After background subtraction, 100.4+-12.6(stat) D*+- mesons have been selected in events without observed scattered beam electron ("anti-tagged") and 29.8+-5.9 (stat) D*+- mesons in events where one beam electron is scattered into the detector ("single-tagged"). Direct and single-resolved events are studied separately. Differential cross-sections as functions of the D* transverse momentum p_t and pseudorapidity \eta are presented in the kinematic region 2

electron positron: colliding beams
exchange: two-photon
photon photon: interaction
quark: charm
quark: pair production
D*(2010): photoproduction
D*(2010): hadronic decay
D0: hadronic decay
differential cross section: transverse momentum
rapidity dependence

References(49)

Figures(0)

Large p(T) heavy quark production in two photon collisions

M. Cacciari
(
- DESY
)
,
Mario Greco
(
- Rome III U. and
- Frascati
)
,
Bernd A. Kniehl
(
- Munich, Max Planck Inst.
)
,
M. Kramer
(
- DESY
)
,
G. Kramer
(
- Hamburg U.
)

et al.

- Nucl.Phys.B 466 (1996) 173-188
•
e-Print:
- hep-ph/9512246
•
DOI:
- 10.1016/0550-3213(96)00067-3

Heavy quark production in two photon collisions

Manuel Drees
(
- Wisconsin U., Madison
)
,
M. Kramer
(
- DESY and
- Mainz U., Inst. Phys.
)
,
J. Zunft
(
- DESY
)
,
P.M. Zerwas
(
- DESY
)

- Phys.Lett.B 306 (1993) 371-378
•
DOI:
- 10.1016/0370-2693(93)90093-W

D* production in two photon collisions

- Nucl.Phys.B 571 (2000) 169-184
•
e-Print:
- hep-ph/9908483
•
DOI:
- 10.1016/S0550-3213(00)00004-3

Complete next-to-leading order QCD corrections to the photon structure functions F2 ( $\gamma$ ) (x, $Q^{2)}$ and F-L ( $\gamma$ ) (x, $Q^{2)}$

Eric Laenen
(
- Fermilab
)
,
S. Riemersma
(
- Southern Methodist U.
)
,
J. Smith
(
- SUNY, Stony Brook
)
,
W.L. van Neerven
(
- Leiden U.
)

- Phys.Rev.D 49 (1994) 5753-5768
•
e-Print:
- hep-ph/9308295
•
DOI:
- 10.1103/PhysRevD.49.5753

Heavy quark production in e gamma scattering

Eric Laenen
(
- CERN
)
,
Stephan Riemersma
(
- DESY, Zeuthen
)

- Phys.Lett.B 376 (1996) 169-176
•
e-Print:
- hep-ph/9602258
•
DOI:
- 10.1016/0370-2693(96)00276-6

Observation of Charmed Mesons in Photon-photon Collisions

JADE

Collaboration

•

W. Bartel
(
- DESY
)

et al.

- Phys.Lett.B 184 (1987) 288-292
•
DOI:
- 10.1016/0370-2693(87)90584-3

Production of Charmed Mesons in $\gamma \gamma$ Interactions

TASSO

Collaboration

•

W. Braunschweig
(
- Aachen, Tech. Hochsch.
)

et al.

- Z.Phys.C 47 (1990) 499-504
•
DOI:
- 10.1007/BF01552314

Inclusive $D^{*\pm}$ production in photon-photon collisions

TPC/Two-Gamma

Collaboration

•

M. Alston-Garnjost
(
- LBL, Berkeley and
- UC, Berkeley
)

et al.

- Phys.Lett.B 252 (1990) 499-504
•
DOI:
- 10.1016/0370-2693(90)90578-T

Measurement of the D*+- cross-section using a soft pion analysis in two photon processes

TOPAZ

Collaboration

•

R. Enomoto
(
- KEK, Tsukuba
)

et al.

- Phys.Lett.B 328 (1994) 535-546
•
e-Print:
- hep-ex/9412001
•
DOI:
- 10.1016/0370-2693(94)91515-6

Measurement of the D*+- cross-section in a two photon process

TOPAZ

Collaboration

•

R. Enomoto
(
- KEK, Tsukuba
)

et al.

- Phys.Rev.D 50 (1994) 1879-1883,
- In *Tsukuba 1993, Proceedings, Particle physics* 311-315, and Tsukuba KEK - KEK-Prepr.-93-107 (93/08,rec.Nov.) 5 p. Nagoya Univ. - DPNU-93-29 (93/08,rec.Nov.) 5 p. Purdue Univ. West Lafayette - PU-93-675 (93/08,rec.Nov.) 5 p. Tokyo Univ. - INS-1002 (93/08,rec.Nov.) 5 p
•
e-Print:
- hep-ex/9411002
•
DOI:
- 10.1103/PhysRevD.50.1879

Measurement of D∗± production in two-photon processes at TRISTAN

AMY

Collaboration

•

N. Takashimizu
(
- Niigata U.
)

et al.

- Phys.Lett.B 384 (1996) 481-486,
- Phys.Lett.B 381 (1996) 372-378,
- Phys.Lett.B 384 (1996) 481-486
•
DOI:
- 10.1016/0370-2693(96)00933-1

Measurement of the D*+- cross-section in two photon collisions at LEP

ALEPH

Collaboration

•

D. Buskulic
(
- Annecy, LAPP
)

et al.

- Phys.Lett.B 355 (1995) 595-605
•
DOI:
- 10.1016/0370-2693(95)00758-D

The OPAL detector at LEP

OPAL

Collaboration

•

K. Ahmet

et al.

- Nucl.Instrum.Meth.A 305 (1991) 275-319
•
DOI:
- 10.1016/0168-9002(91)90547-4

The OPAL silicon strip microvertex detector with two coordinate readout

OPAL

Collaboration

•

P.P. Allport
(
- Cambridge U.
)

et al.

- Nucl.Instrum.Meth.A 346 (1994) 476-495
•
DOI:
- 10.1016/0168-9002(94)90583-5

The OPAL silicon microvertex detector

OPAL

Collaboration

•

P.P. Allport
(
- Cambridge U.
)

et al.

- Nucl.Instrum.Meth.A 324 (1993) 34-52
•
DOI:
- 10.1016/0168-9002(93)90964-J

Performance of the OPAL jet chamber

et al.

- Nucl.Instrum.Meth.A 323 (1992) 169-177,
- Wire Chamber Conf.1992:169-177,
- Nucl. Instrum. Methods A323 (1992) 169-177 and CERN Geneva - CERN-PPE-92-055 (92/04,rec.Jun.) 22 p
•
DOI:
- 10.1016/0168-9002(92)90284-B

Particle identification with the OPAL jet chamber

et al.

- Nucl.Instrum.Meth.A 314 (1992) 74-85
•
DOI:
- 10.1016/0168-9002(92)90501-T

The OPAL silicon - tungsten calorimeter front end electronics

OPAL

Collaboration

•

B.E. Anderson

et al.

- IEEE Trans.Nucl.Sci. 41 (1994) 845-852
•
DOI:
- 10.1109/23.322818

- Nuovo Cim. 17 809

Photon-Photon Reactions

Christoph Berger
(
- Aachen, Tech. Hochsch.
)
,
W. Wagner
(
- UC, Davis
)

- Phys.Rept. 146 (1987) 1-134
•
DOI:
- 10.1016/0370-1573(87)90012-3

High-energy physics event generation with PYTHIA 5.7 and JETSET 7.4

Torbjorn Sjostrand
(
- CERN
)

- Comput.Phys.Commun. 82 (1994) 74-90,
- CERN Geneva - TH. 7111 (93/12,rec.Jan.94) 17 p. and e: CERN th-7111-93
•
DOI:
- 10.1016/0010-4655(94)90132-5

Low and high mass components of the photon distribution functions

- Z.Phys.C 68 (1995) 607-624
•
e-Print:
- hep-ph/9503384
•
DOI:
- 10.1007/BF01565260

Scaling Violations in Inclusive e+ e- Annihilation Spectra

- Phys.Rev.D 27 (1983) 105
•
DOI:
- 10.1103/PhysRevD.27.105

HERWIG: A Monte Carlo event generator for simulating hadron emission reactions with interfering gluons. Version 5.1 - April 1991

G. Marchesini
(
- Parma U. and
- INFN, Parma
)
,
B.R. Webber
(
- Cambridge U.
)
,
G. Abbiendi
(
- Padua U. and
- INFN, Padua
)
,
I.G. Knowles
(
- Glasgow U.
)
,
M.H. Seymour
(
- Cambridge U.
)

et al.

- Comput.Phys.Commun. 67 (1992) 465-508,
- Comput. Phys. Commun. 67 (1992) 465-508 and Hamburg DESY - DESY 91-048 (91/05,rec.Jul.) 49 p
•
DOI:
- 10.1016/0010-4655(92)90055-4

Two Photon Production Processes at High-Energy. 2.

J. Smith
(
- SUNY, Stony Brook
)
,
J.A.M. Vermaseren
(
- SUNY, Stony Brook
)
,
G. Grammer, Jr.
(
- Illinois U., Urbana
)

- Phys.Rev.D 15 (1977) 3280
•
DOI:
- 10.1103/PhysRevD.15.3280

1-25 of 49
1
2
25 / page