Obtaining the nuclear gluon distribution from heavy quark decays to lepton pairs in pA collisions - INSPIRE

DataBETA

Obtaining the nuclear gluon distribution from heavy quark decays to lepton pairs in pA collisions

K.J. Eskola
(
- Jyvaskyla U. and
- Helsinki Inst. of Phys.
)
,
V.J. Kolhinen
(
- Jyvaskyla U.
)
,
R. Vogt
(
- LBL, Berkeley and
- UC, Davis
)

Apr, 2001

19 pages

Published in:

Nucl.Phys.A 696 (2001) 729-746

e-Print:

hep-ph/0104124 [hep-ph]

DOI:

10.1016/S0375-9474(01)01221-0

Report number:

JYFL-6-01

View in:

reference search84 citations

Citations per year

Abstract:

We have studied how lepton pairs from decays of heavy-flavoured mesons produced in p

A

collisions can be used to determine the modifications of the gluon distribution in the nucleus. Since heavy quark production is dominated by the

gg

channel, the ratio of correlated lepton pair cross sections from

D\bar D

and

B\bar B

decays in p

A

and pp collisions directly reflects the ratio

R_g^A \equiv f_g^A/f_g^p

. We have numerically calculated the lepton pair cross sections from these decays in pp and p

A

collisions at SPS, RHIC and LHC energies. We find that ratio of the p

A

to pp cross sections agrees quite well with the input

R_g^A.

Thus, sufficiently accurate measurements could be used to determine the nuclear modification of the gluon distribution over a greater range of

x

and

Q^2

than presently available, putting strong constraints on models.

Note:

19 pages, 6 figures Report-no: JYFL-6/01

p nucleus: nuclear reaction
p p: inclusive reaction
lepton: pair production
D: pair production
B: pair production
B: semileptonic decay
correlation
mass spectrum: dilepton
differential cross section: ratio
quantum chromodynamics

References(28)

Figures(0)

Twist four nuclear parton distributions from photoproduction

Ma Luo
(
- Iowa State U.
)
,
Jian-wei Qiu
(
- Iowa State U.
)
,
George F. Sterman
(
- SUNY, Stony Brook
)

- Phys.Rev.D 49 (1994) 4493-4502
•
DOI:
- 10.1103/PhysRevD.49.4493

Nuclear enhanced higher twist effects in the Drell-Yan process

- Nucl.Phys.B 582 (2000) 537-570
•
e-Print:
- hep-ph/0002074
•
DOI:
- 10.1016/S0550-3213(00)00291-1

Scale evolution of nuclear parton distributions

K.J. Eskola
(
- Jyvaskyla U. and
- CERN
)
,
V.J. Kolhinen
(
- Jyvaskyla U.
)
,
P.V. Ruuskanen
(
- Jyvaskyla U.
)

- Nucl.Phys.B 535 (1998) 351-371
•
e-Print:
- hep-ph/9802350
•
DOI:
- 10.1016/S0550-3213(98)00589-6

The Scale dependent nuclear effects in parton distributions for practical applications

K.J. Eskola
(
- Jyvaskyla U.
)
,
V.J. Kolhinen
(
- Jyvaskyla U.
)
,
C.A. Salgado
(
- Santiago de Compostela U.
)

- Eur.Phys.J.C 9 (1999) 61-68
•
e-Print:
- hep-ph/9807297
•
DOI:
- 10.1007/s100520050513

Nuclear effects in structure functions

Michele Arneodo
(
- INFN, Turin
)

- Phys.Rept. 240 (1994) 301-393
•
DOI:
- 10.1016/0370-1573(94)90048-5

Calculation of the Structure Functions for Deep Inelastic Scattering and e+ e- Annihilation by Perturbation Theory in Quantum Chromodynamics.

Yuri L. Dokshitzer
(
- St. Petersburg, INP
)

- Sov.Phys.JETP 46 (1977) 641-653,
- Zh.Eksp.Teor.Fiz. 73 (1977) 1216-1240

- Nucl.Phys. 15 675

Asymptotic Freedom in Parton Language

- Nucl.Phys.B 126 (1977) 298-318
•
DOI:
- 10.1016/0550-3213(77)90384-4

Scale dependence of nuclear gluon structure

K.J. Eskola
(
- LBL, Berkeley
)

- Nucl.Phys.B 400 (1993) 240-266
•
DOI:
- 10.1016/0550-3213(93)90406-F

Singlet Structure Function at Small x: Unitarization of Gluon Ladders

- Nucl.Phys.B 188 (1981) 555-576,
- Nucl. Phys. B188 ( 1981) 555-576
•
DOI:
- 10.1016/0550-3213(81)90007-9

Semihard Processes in QCD

- Phys.Rept. 100 (1983) 1-150,
- Phys. Rep. 100 ( 1983) 1-150
•
DOI:
- 10.1016/0370-1573(83)90022-4

Gluon Recombination and Shadowing at Small Values of x

Alfred H. Mueller
(
- Columbia U.
)
,
Jian-wei Qiu
(
- Columbia U.
)

- Nucl.Phys.B 268 (1986) 427-452
•
DOI:
- 10.1016/0550-3213(86)90164-1

Nuclear Dependence of Dimuon Production at 800-GeV

et al.

- Phys.Rev.Lett. 64 (1990) 2479-2482
•
DOI:
- 10.1103/PhysRevLett.64.2479

The Q**2 dependence of the structure function ratio F2 Sn / F2 C and the difference R Sn - R C in deep inelastic muon scattering

New Muon

Collaboration

•

M. Arneodo
(
- INFN, Turin and
- Turin U.
)

et al.

- Nucl.Phys.B 481 (1996) 23-39
•
DOI:
- 10.1016/S0550-3213(96)90119-4

The Ratio of gluon distributions in Sn and C

T. Gousset
(
- Heidelberg U.
)
,
H.J. Pirner
(
- Heidelberg U.
)

- Phys.Lett.B 375 (1996) 349-354
•
e-Print:
- hep-ph/9601242
•
DOI:
- 10.1016/0370-2693(96)00189-X

How to find charm in nuclear collisions at RHIC and CERN LHC

S. Gavin
(
- Brookhaven
)
,
P.L. McGaughey
(
- Los Alamos
)
,
P.V. Ruuskanen
(
- Jyvaskyla U.
)
,
R. Vogt
(
- LBL, Berkeley and
- UC, Davis
)

- Phys.Rev.C 54 (1996) 2606-2623
•
e-Print:
- hep-ph/9604369
•
DOI:
- 10.1103/PhysRevC.54.2606

Nuclear gluon shadowing via dileptons from open charm decay in p + A at s**(1/2) = 200-A/GeV

Zi-wei Lin
(
- Columbia U.
)
,
Miklos Gyulassy
(
- Columbia U.
)

- Nucl.Phys.A 610 (1996) 476C-483C
•
e-Print:
- nucl-th/9608050
•
DOI:
- 10.1016/S0375-9474(96)00380-6

Scaling Violations in Inclusive e+ e- Annihilation Spectra

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

Associated Production of Heavy Flavor States in p p and anti-p p Interactions: Some QCD Estimates

B.L. Combridge
(
- CERN
)

- Nucl.Phys.B 151 (1979) 429-456
•
DOI:
- 10.1016/0550-3213(79)90449-8

Parton distributions: A New global analysis

- Eur.Phys.J.C 4 (1998) 463-496
•
e-Print:
- hep-ph/9803445
•
DOI:
- 10.1007/s100520050220

Scheme dependence, leading order and higher twist studies of MRST partons

- Phys.Lett.B 443 (1998) 301-307
•
e-Print:
- hep-ph/9808371
•
DOI:
- 10.1016/S0370-2693(98)01325-2

PDFLIB: A Library of all available parton density functions of the nucleon, the pion and the photon and the corresponding alpha-s calculations

H. Plothow-Besch
(
- CERN
)

- Comput.Phys.Commun. 75 (1993) 396-416,
- In *Amsterdam 1991, Proceedings, MC91: Detector and event simulation in high energy physics* 148-163. (see HIGH ENERGY PHYSICS INDEX 30 (1992) No. 3237)
•
DOI:
- 10.1016/0010-4655(93)90051-D

The Parton distribution function library

H. Plothow-Besch
(
- Dortmund U.
)

- Int.J.Mod.Phys.A 10 (1995) 2901-2920
•
DOI:
- 10.1142/S0217751X9500139X

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

The PHENIX experiment at RHIC

PHENIX

Collaboration

•

D.P. Morrison

et al.

- Nucl.Phys.A 638 (1998) 565-570
•
e-Print:
- hep-ex/9804004
•
DOI:
- 10.1016/S0375-9474(98)00390-X

1-25 of 28
1
2
25 / page