Determination of the longitudinal proton structure function F(L) (x, Q**2) at low x

Adloff, C.; Aid, S.; Anderson, M.; Andreev, V.; Andrieu, B.; Arndt, C.; Babaev, A.; Bahr, J.; Ban, J.; Ban, Y.

doi:10.1016/S0370-2693(96)01684-X

Determination of the longitudinal proton structure function F(L) (x, Q**2) at low x

H1

Collaboration

Nov, 1996

17 pages

Published in:

Phys.Lett.B 393 (1997) 452-464

e-Print:

hep-ex/9611017 [hep-ex]

DOI:

10.1016/S0370-2693(96)01684-X

Report number:

DESY-96-236

Experiments:

DESY-HERA-H1

View in:

pdfdatasets

reference search146 citations

Citations per year

Abstract:

A measurement of the inclusive cross section for the deep-inelastic scattering of positrons off protons at HERA is presented at momentum transfers

8.5 \leq Q~2 \leq 35 GeV~2

and large inelasticity

y = 0.7

, i.e. for the Bjorken-x range

0.00013 \leq x \leq 0.00055

. Using a next-to-leading order QCD fit to the structure function F_2 at lower y values, the contribution of F_2 to the measured cross section at high y is calculated and, by subtraction, the longitudinal structure function F_{L} is determined for the first time with an average value of

F_L=0.52 \pm 0.03 (stat)

~ {+0.25}_{-0.22}

(syst) at

Q~2=15.4 GeV~2

and

x=0.000243$.

Note:

17 pages, latex, 4 Figures Report-no: DESY 96-236

positron p: colliding beams
positron p: deep inelastic scattering
positron p: inclusive reaction
p: structure function
structure function: longitudinal
cross section: momentum transfer
cross section: x-dependence
DGLAP equation
H1
experimental results

References(23)

Figures(0)

High-energy electroproduction and the constitution of the electric current

Curtis G. Callan, Jr.
(
- Harvard U.
)
,
David J. Gross
(
- Harvard U.
)

- Phys.Rev.Lett. 22 (1969) 156-159
•
DOI:
- 10.1103/PhysRevLett.22.156

Scaling Deviations for Neutrino Reactions in Asymptotically Free Field Theories

- Phys.Rev.D 10 (1974) 2881
•
DOI:
- 10.1103/PhysRevD.10.2881

Order alpha-s**2 QCD corrections to the deep inelastic proton structure functions F2 and F(L)

E.B. Zijlstra
(
- Leiden U.
)
,
W.L. van Neerven
(
- Leiden U.
)

- Nucl.Phys.B 383 (1992) 525-574
•
DOI:
- 10.1016/0550-3213(92)90087-R

Two Loop {QCD} Corrections to the Coefficient Functions of the Deep Inelastic Structure Functions $F-2$ and $F-L$

S.A. Larin
(
- NIKHEF, Amsterdam
)
,
J.A.M. Vermaseren
(
- NIKHEF, Amsterdam
)

- Z.Phys.C 57 (1993) 93-98
•
DOI:
- 10.1007/BF01555743

A Precise extraction of R = sigma-L / sigma-T from a global analysis of the SLAC deep inelastic e p and e d scattering cross-sections

L.W. Whitlow
(
- Stanford U., Phys. Dept.
)
,
Stephen Rock
(
- American U.
)
,
A. Bodek
(
- Rochester U.
)
,
E.M. Riordan
(
- SLAC
)
,
S. Dasu
(
- SLAC
)

- Phys.Lett.B 250 (1990) 193-198
•
DOI:
- 10.1016/0370-2693(90)91176-C

Measurement of the proton and deuteron structure functions, F2(p) and F2(d), and of the ratio sigma-L / sigma-T

New Muon

Collaboration

•

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

et al.

- Nucl.Phys.B 483 (1997) 3-43
•
e-Print:
- hep-ph/9610231
•
DOI:
- 10.1016/S0550-3213(96)00538-X

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

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

Deep inelastic e p scattering in perturbation theory

V.N. Gribov
(
- St. Petersburg, INP
)
,
L.N. Lipatov
(
- St. Petersburg, INP
)

- Sov.J.Nucl.Phys. 15 (1972) 438-450,
- Yad.Fiz. 15 (1972) 781-807

e+ e- pair annihilation and deep inelastic e p scattering in perturbation theory

V.N. Gribov
(
- St. Petersburg, INP
)
,
L.N. Lipatov
(
- St. Petersburg, INP
)

- Sov.J.Nucl.Phys. 15 (1972) 675-684,
- Yad.Fiz. 15 (1972) 1218-1237

Asymptotic Freedom in Parton Language

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

A High Statistics Measurement of the Proton Structure Functions F(2) (x, Q2) and R from Deep Inelastic Muon Scattering at High Q2

BCDMS

Collaboration

•

A.C. Benvenuti
(
- Bologna U. and
- INFN, Bologna
)

et al.

- Phys.Lett.B 223 (1989) 485-489
•
DOI:
- 10.1016/0370-2693(89)91637-7

Heracles: An Event Generator for $e p$ Interactions at {HERA} Energies Including Radiative Processes: Version 1.0

- Comput.Phys.Commun. 69 (1992) 155-172,
- Comput. Phys. Commun. 69 (1992) 155-172 and Hamburg DESY - DESY 90-041 (90,rec.May) 16 p
•
DOI:
- 10.1016/0010-4655(92)90136-M

Hector 1.00: A Program for the calculation of QED, QCD and electroweak corrections to e p and lepton+- N deep inelastic neutral and charged current scattering

A. Arbuzov
(
- Dubna, JINR
)
,
Dmitri Yu. Bardin
(
- DESY, Zeuthen and
- Dubna, JINR
)
,
J. Blumlein
(
- DESY, Zeuthen
)
,
L. Kalinovskaya
(
- Dubna, JINR
)
,
T. Riemann
(
- DESY, Zeuthen
)

- Comput.Phys.Commun. 94 (1996) 128-184,
- Comput. Phys. Commun. 94 (1996) 128-184, and Hamburg DESY - DESY-95-185 (95/11,rec.Dec.) 74 p
•
e-Print:
- hep-ph/9511434
•
DOI:
- 10.1016/0010-4655(96)00005-7

Dynamical parton distributions of the proton and small x physics

- Z.Phys.C 67 (1995) 433-448
•
DOI:
- 10.1007/BF01624586

Recent developments in radiative corrections at HERA

Dmitri Yu. Bardin
(
- DESY, Zeuthen and
- Dubna, JINR
)
,
Johannes Blumlein
(
- DESY, Zeuthen
)
,
Pena Christova
(
- Preslavski U.
)
,
Lida Kalinovskaya
(
- Dubna, JINR
)

- In *Hamburg 1995/96, Future physics at HERA* 13-22
•
e-Print:
- hep-ph/9609399

The H1 backward calorimeter BEMC and its inclusive electron trigger

et al.

- Nucl.Instrum.Meth.A 372 (1996) 399-414
•
DOI:
- 10.1016/0168-9002(95)01481-0

Transverse Momentum of Jets in Electroproduction from Quantum Chromodynamics

Guido Altarelli
(
- Rome U. and
- INFN, Rome
)
,
G. Martinelli
(
- Frascati
)

- Phys.Lett.B 76 (1978) 89-94
•
DOI:
- 10.1016/0370-2693(78)90109-0

Measurement of the proton and the deuteron structure functions, F2(p) and F2(d)

New Muon

Collaboration

•

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

et al.

- Phys.Lett.B 364 (1995) 107-115,
- Phys. Lett. B364 (1995) 107-115, and CERN Geneva - CERN-PPE-95-138 (95/09,rec.Oct.) 22 p
•
e-Print:
- hep-ph/9509406
•
DOI:
- 10.1016/0370-2693(95)01318-9

Complete O (alpha-s) corrections to heavy flavor structure functions in electroproduction

- Nucl.Phys.B 392 (1993) 162-228
•
DOI:
- 10.1016/0550-3213(93)90201-Y

Soft gluons in the infinite momentum wave function and the BFKL pomeron

Alfred H. Mueller
(
- SLAC and
- Columbia U.
)

- Nucl.Phys.B 415 (1994) 373-385
•
DOI:
- 10.1016/0550-3213(94)90116-3

Proton structure functions in the dipole picture of BFKL dynamics

- Phys.Lett.B 385 (1996) 357-364,
- DIS 1996:250-253
•
e-Print:
- hep-ph/9605389
•
DOI:
- 10.1016/0370-2693(96)00889-1

An Observation on F2 at low x

A. De Roeck
(
- DESY
)
,
E.A. De Wolf
(
- Antwerp U.
)

- Phys.Lett.B 388 (1996) 843-847
•
e-Print:
- hep-ph/9609203
•
DOI:
- 10.1016/S0370-2693(96)01273-7