Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                

First measurement of the Ar(e,e′)X cross section at Jefferson Laboratory

H. Dai et al. (The Jefferson Lab Hall A Collaboration)
Phys. Rev. C 99, 054608 – Published 8 May 2019
PDFHTMLExport Citation
Abstract
Authors
Article Text
  • ACKNOWLEDGMENTS
    • References

    Abstract

    The success of the ambitious programs of both long- and short-baseline neutrino-oscillation experiments employing liquid-argon time-projection chambers will greatly rely on the precision with which the weak response of the argon nucleus can be estimated. In the E12-14-012 experiment at Jefferson Lab Hall A, we studied the properties of the argon nucleus by scattering a high-quality electron beam off a high-pressure gaseous argon target. Here, we present the measured Ar40(e,e′) double differential cross section at incident electron energy E=2.222 GeV and scattering angle θ=15.54∘. The data cover a broad range of energy transfers, where quasielastic scattering and delta production are the dominant reaction mechanisms. The result for argon is compared to our previously reported cross sections for titanium and carbon, obtained in the same kinematical setup.

    • Figure
    • Figure
    • Figure
    • Figure
    • Received 29 October 2018

    DOI:https://doi.org/10.1103/PhysRevC.99.054608

    ©2019 American Physical Society

    Physics Subject Headings (PhySH)

    1. Research Areas
    Electroweak interactions in nuclear physicsElectroweak radiative correctionsLepton induced nuclear reactionsNuclear many-body theoryNucleon-nucleon interactionsNucleus-neutrino interactionsQuantum electrodynamics
    Nuclear PhysicsParticles & FieldsAccelerators & Beams

    Authors & Affiliations

    Click to Expand

    Article Text (Subscription Required)

    Click to Expand

    References (Subscription Required)

    Click to Expand
    Issue

    Vol. 99, Iss. 5 — May 2019

    Reuse & Permissions
    Access Options
    CHORUS

    Article Available via CHORUS

    Download Accepted Manuscript
    Author publication services for translation and copyediting assistance advertisement

    Authorization Required

    Log In
    Other Options
    ×

    Images

    • Figure 1
      Figure 1

      Double differential cross section for the Ar(e,e′) process, extracted with two different methods, at beam energy of 2.222 GeV and scattering angle of 15.54∘. The inner and outer bars correspond to the statistical and total uncertainty, respectively. The dotted curve represents the quasielastic calculations obtained within the RGF formalism described in Ref. [31].

      Reuse & Permissions
    • Figure 2
      Figure 2

      Comparison of Ar(e,e′) cross section of Fig. 1, and Ti(e,e′) and C(e,e′) cross sections of Ref. [23], all in the same kinematics, presented in terms of the ratio defined by Eq. (4).

      Reuse & Permissions
    • Figure 3
      Figure 3

      Comparison between the scaling function of the second kind, f(ψ), obtained from E12-14-012 data on Ar, Ti, and C. The kF of C is fixed to the value obtained by Moniz et al. [35] while the data analysis of Ti and Ar sets kF at 240 and 245 MeV, respectively. The circles are the Ar data from LNF [11], which turn out to prefer an inconsistently higher value of kF.

      Reuse & Permissions
    • Figure 4
      Figure 4

      Comparison between the scaling function F(y) obtained from the E12-14-012 data on argon, titanium, and carbon, and the argon data obtained at LNF [11].

      Reuse & Permissions
    ×

    Sign up to receive regular email alerts from Physical Review C

    Log In

    Cancel
    ×

    Search

    Article Lookup

    Paste a citation or DOI
    Enter a citation
    ×