Measurements of R=σL/σT for 0.03&lt;x&lt;0.1 and fit to world data

K, Abe; Akagi, T.; Anthony, P.L.; Antonov, R.; Arnold, R. G.; Averett, T.; Band, H. R.; Bauer, J. M.; Borel, H.; Bosted, P.; Breton, Vincent; Button‐Shafer, J.; Chen, J.P.; Chupp, T. E.; Clendenin, J. E.; Comptour, C.; Coulter, K. P.; Court, G.R.; Crabb, D.; Daoudi, M.; Day, D.; Dietrich, F. S.; Dunne, J.; Dutz, H.; Erbacher, R.; Fellbaum, J.; Feltham, A.; Fonvieille, H.; Frlež, E.; Garvey, D.; Gearhart, R.; Gómez, J.; Greniér, Philippe; Griffioen, K. A.; Høibråten, S.; Hughes, E. W.; Hyde‐Wright, C. E.; Johnson, J. R.; Kawall, D.; Klein, A.; Kuhn, S. E.; Kuriki, M.; Lindgren, R.; Liu, T.J.; Lombard-Nelsen, R. M.; Marroncle, J.; Maruyama, T.; Maruyama, X. K.; McCarthy, J.; Meyer, W.; Meziani, Z. E.; Minehart, R.; Mitchell, J.; Morgenstern, J.; Petratos, G. G.; Pitthan, R.; Počanić, D.; Prepost, R.; Prescott, C.Y.; Raines, P.; Raue, B. A.; Reyna, D.; Rijllart, A.; Roblin, Y.; Rochester, L.S.; Rock, S. E.; Rondon, O.; Sick, I.; Smith, L. C.; Smith, T. B.; Spengos, M.; Staley, F.; Steiner, P.; Lorant, S. St.; Stuart, L. M.; Suekane, F.; Szalata, Z. M.; Tang, Huan; Terrien, Y.; Usher, T.; Walz, D.; Wesselmann, F. R.; White, J. L.; Witte, K.; Young, C.; Youngman, B.; Yuta, H.; Zapalac, G.; Zihlmann, B.; Zimmermann, D.

doi:10.1016/s0370-2693(99)00244-0

Cited by 128 publications

(66 citation statements)

References 15 publications

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“…The results with the parametrization of Ref. [20] are very similar, and are consistent within the quoted uncertainties.…”

Section: Pvdis On the Protonsupporting

confidence: 85%

“…While data and phenomenological parametrizations are available for R γ [19][20][21], currently no empirical information exists on R γZ . In our numerical estimates below, we shall consider a range of possible behaviors for R γZ and examine its effect on A PV .…”

Section: Electroweak Structure Functionsmentioning

confidence: 99%

“…This conservative range is, as for the proton, motivated by the phenomenological study of R γ and R Z in Ref. [25], and the relatively weak isospin dependence of R γ [19,20]. This results in an additional ≈ 0.5% (1%) shift of A PV (solid) and from the parametrization δu − δd = 2κf (x) (dashed, see text), with κ = −0.2 (best fit), and the two 90% confidence levels, κ = −0.8 and κ = +0.65 [30].…”

Section: A Finite-q 2 Correctionsmentioning

confidence: 99%

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Finite-Q2corrections to parity-violating DIS

Hobbs

Melnitchouk

2008

Phys. Rev. D

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Parity-violating deep inelastic scattering (PVDIS) has been proposed as an important new tool to extract the flavor and isospin dependence of parton distributions in the nucleon. We discuss finite-Q 2 effects in PVDIS asymmetries arising from subleading kinematical corrections and longitudinal contributions to the γZ interference. For the proton, these need to be accounted for in order to accurately extract the d/u ratio at large x; for the deuteron they are important to consider when searching for evidence of charge symmetry violation in parton distributions or signals for physics beyond the standard model. We further explore the dependence of PVDIS asymmetries for polarized targets on the u and d helicity distributions at large x.

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“…The results with the parametrization of Ref. [20] are very similar, and are consistent within the quoted uncertainties.…”

Section: Pvdis On the Protonsupporting

confidence: 85%

Section: Electroweak Structure Functionsmentioning

confidence: 99%

Section: A Finite-q 2 Correctionsmentioning

confidence: 99%

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Finite-Q2corrections to parity-violating DIS

Hobbs

Melnitchouk

2008

Phys. Rev. D

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“…The structure functions F p 2 and F d 2 are finally derived from the Born cross sections through eq. (2.6) using the parameterization R = R 1998 [32]. Two more corrections related to detector geometry and alignment are discussed in sections 4.7 and 4.8.…”

Section: Discussionmentioning

confidence: 99%

“…The overall normalization uncertainty is 7.6%. The structure function F p 2 is derived using the parameterization R = R 1998 [32].…”

Section: Jhep05(2011)126mentioning

confidence: 99%

Inclusive measurements of inelastic electron and positron scattering from unpolarized hydrogen and deuterium targets

Airapetian¹,

Акопов²,

Akopov³

et al. 2011

J. High Energ. Phys.

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Results of inclusive measurements of inelastic electron and positron scattering from unpolarized protons and deuterons at the HERMES experiment are presented. The structure functions F p 2 and F d 2 are determined using a parameterization of existing data for the longitudinal-to-transverse virtual-photon absorption cross-section ratio. The HERMES results provide data in the ranges 0.006 ≤ x ≤ 0.9 and 0.1 GeV 2 ≤ Q 2 ≤ 20 GeV 2 , covering the transition region between the perturbative and the non-perturbative regimes of QCD in a so-far largely unexplored kinematic region. They are in agreement with existing world data in the region of overlap. The measured cross sections are used, in combination with data from other experiments, to perform fits to the photon-nucleon cross section using the functional form of the ALLM model. The deuteron-to-proton cross-section ratio is also determined.

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Non-Abelian Gauge Theories

Manoukian

2016

Quantum Field Theory I

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Measurements of R=σL/σT for 0.03<x<0.1 and fit to world data

Cited by 128 publications

References 15 publications

Finite-Q2corrections to parity-violating DIS

Finite-Q2corrections to parity-violating DIS

Inclusive measurements of inelastic electron and positron scattering from unpolarized hydrogen and deuterium targets

Non-Abelian Gauge Theories

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