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Measurements of total production cross sections for π++C, π++Al, K++C, and K++Al at 60GeV/c and π++C and π++Al at 31GeV/c

A. Aduszkiewicz et al. (NA61/SHINE Collaboration)
Phys. Rev. D 98, 052001 – Published 10 September 2018

Abstract

This paper presents several measurements of total production cross sections and total inelastic cross sections for the following reactions: π++C, π++Al, K++C, K++Al at 60GeV/c, π++C and π++Al at 31GeV/c. The measurements were made using the NA61/SPS Heavy Ion and Neutrino Experiment spectrometer at the CERN Super Proton Synchrotron (SPS). Comparisons with previous measurements are given and good agreement is seen. These interaction cross sections measurements are a key ingredient for neutrino flux prediction from the reinteractions of secondary hadrons in current and future accelerator-based long-baseline neutrino experiments.

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  • Received 15 May 2018

DOI:https://doi.org/10.1103/PhysRevD.98.052001

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
Particles & Fields

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Vol. 98, Iss. 5 — 1 September 2018

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Images

  • Figure 1
    Figure 1

    The schematic top-view layout of the NA61/SHINE experiment in the configuration used during the 2015 data taking. The two superconducting vertex magnets were not operational during the data-taking period.

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  • Figure 2
    Figure 2

    CEDAR pressure scans for the 31GeV/c beam (left) and the 60GeV/c beam (right). The vertical axis shows the fraction of beam particles that fires at least 6 of the 8 CEDAR PMTs. The green dashed lines show the approximate values of the CEDAR pressure settings that were used for the data sets analyzed here.

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  • Figure 3
    Figure 3

    Positions of BPD tracks extrapolated to the S4 plane in target removed data runs from the π++C at 31GeV/c data set. The measured S4 position is shown as a black circle and the BPD radius cut is shown as a red circle in both figures. (Left) Events taken by the beam trigger. (Right) Events taken by the interaction trigger.

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  • Figure 4
    Figure 4

    Positions of BPD tracks extrapolated to the S4 plane in target removed data runs from the π++C at 60GeV/c data set. The measured S4 position is shown as a black circle and the BPD radius cut is shown as a red circle in both figures. (Left) Events taken by the beam trigger. (Right) Events taken by the interaction trigger.

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  • Figure 5
    Figure 5

    Trigger interaction probabilities for the π++C at 60GeV/c data set. (Left) Target inserted data set. (Right) Target removed data set.

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  • Figure 6
    Figure 6

    The binned data shows the dE/dx distribution of the maximum field data set for the 60GeV/c π+ beam. Overlaid is the sum of Gaussians fit to the histogram as well as the individual π+ and e+ components. From this fit, the positron contribution was estimated to be 2%.

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  • Figure 7
    Figure 7

    Summary of production cross section measurements. The results are compared to previous results obtained with a beam momentum of 60GeV/c by Carrol et al. [15].

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  • Figure 8
    Figure 8

    Summary of inelastic cross section measurements. The results are compared to previous results by Denisov et al. [16].

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