Measurements of $\pi ^{\pm }$ , $K^{\pm }$ , $K^0_S$ , $\varLambda $ and proton production in proton–carbon interactions at 31 GeV/c with the NA61/SHINE spectrometer at the CERN SPS

The NA61/SHINE collaboration Abgrall, N. ; Aduszkiewicz, A. ; Ali, Y. ; et al.
Eur.Phys.J. C76 (2016) 84, 2016.
Inspire Record 1397003 DOI 10.17182/hepdata.19125

Measurements of hadron production in p + C interactions at 31 GeV/c are performed using the NA61/SHINE spectrometer at the CERN SPS. The analysis is based on the full set of data collected in 2009 using a graphite target with a thickness of 4 % of a nuclear interaction length. Inelastic and production cross sections as well as spectra of $\pi ^{\pm }$ , $K^{\pm }$ , p, $K^0_S$ and $\varLambda $ are measured with high precision. These measurements are essential for improved calculations of the initial neutrino fluxes in the T2K long-baseline neutrino oscillation experiment in Japan. A comparison of the NA61/SHINE measurements with predictions of several hadroproduction models is presented.

62 data tables

The double differential $\pi^+$ production cross section in the laboratory system for p+C interactions at 31 GeV$/c$. The results are presented as a function of momentum, $p$ (in [GeV/$c$]), in different angular intervals, $\theta$ (in [mrad]). The statistical and systematic errors are quoted.

The double differential $\pi^+$ production cross section in the laboratory system for p+C interactions at 31 GeV$/c$. The results are presented as a function of momentum, $p$ (in [GeV/$c$]), in different angular intervals, $\theta$ (in [mrad]). The statistical and systematic errors are quoted.

The double differential $\pi^+$ production cross section in the laboratory system for p+C interactions at 31 GeV$/c$. The results are presented as a function of momentum, $p$ (in [GeV/$c$]), in different angular intervals, $\theta$ (in [mrad]). The statistical and systematic errors are quoted.

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Comparison of large-angle production of charged pions with incident protons on cylindrical long and short targets

The HARP collaboration Apollonio, M. ; Artamonov, A. ; Bagulya, A. ; et al.
Phys.Rev. C80 (2009) 065204, 2009.
Inspire Record 830148 DOI 10.17182/hepdata.54193

The HARP collaboration has presented measurements of the double-differential pi+/pi- production cross-section in the range of momentum 100 MeV/c <= p 800 MeV/c and angle 0.35 rad <= theta <= 2.15 rad with proton beams hitting thin nuclear targets. In many applications the extrapolation to long targets is necessary. In this paper the analysis of data taken with long (one interaction length) solid cylindrical targets made of carbon, tantalum and lead is presented. The data were taken with the large acceptance HARP detector in the T9 beam line of the CERN PS. The secondary pions were produced by beams of protons with momenta 5 GeV/c, 8 GeV/c and 12 GeV/c. The tracking and identification of the produced particles were performed using a small-radius cylindrical time projection chamber (TPC) placed inside a solenoidal magnet. Incident protons were identified by an elaborate system of beam detectors. Results are obtained for the double-differential yields per target nucleon d2 sigma / dp dtheta. The measurements are compared with predictions of the MARS and GEANT4 Monte Carlo simulations.

54 data tables

Differential cross section for PI+ production with a C target in the angular range 0.35 to 0.55 radians.. The errors are the square root of the diagonal elements of the covariant matrix.

Differential cross section for PI+ production with a C target in the angular range 0.55 to 0.75 radians.. The errors are the square root of the diagonal elements of the covariant matrix.

Differential cross section for PI+ production with a C target in the angular range 0.75 to 0.95 radians.. The errors are the square root of the diagonal elements of the covariant matrix.

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Large-angle production of charged pions with incident pion beams on nuclear targets

The HARP collaboration Apollonio, M. ; Artamonov, A. ; Bagulya, A. ; et al.
Phys.Rev. C80 (2009) 065207, 2009.
Inspire Record 825244 DOI 10.17182/hepdata.50467

Measurements of the double-differential pi+/- production cross-section in the range of momentum 100 MeV/c <= p <= 800 MeV/c and angle 0.35 rad <= theta <= 2.15 rad using pi+/- beams incident on beryllium, aluminium, carbon, copper, tin, tantalum and lead targets are presented. The data were taken with the large acceptance HARP detector in the T9 beam line of the CERN PS. The secondary pions were produced by beams in a momentum range from 3 GeV/c to 12.9 GeV/c hitting a solid target with a thickness of 5% of a nuclear interaction length. The tracking and identification of the produced particles was performed using a small-radius cylindrical time projection chamber (TPC) placed inside a solenoidal magnet. Incident particles were identified by an elaborate system of beam detectors. Results are obtained for the double-differential cross-sections d2sigma/dpdtheta at six incident beam momenta. Data at 3 GeV/c, 5 GeV/c, 8 GeV/c, and 12 GeV/c are available for all targets while additional data at 8.9 GeV/c and 12.9 GeV/c were taken in positive particle beams on Be and Al targets, respectively. The measurements are compared with several generators of GEANT4 and the MARS Monte Carlo simulation.

252 data tables

No description provided.

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Large-angle production of charged pions with 3-12.9-GeV/c incident protons on nuclear targets

The HARP collaboration Catanesi, M.G. ; Radicioni, E. ; Edgecock, R. ; et al.
Phys.Rev. C77 (2008) 055207, 2008.
Inspire Record 786183 DOI 10.17182/hepdata.13425

Measurements of the double-differential charged pion production cross-section in the range of momentum 100 MeV/c &lt; p &lt; 800 MeV/c and angle 0.35 &lt; \theta &lt; 2.15 rad in proton-beryllium, proton-carbon, proton-aluminium, proton-copper, proton-tin, proton-tantalum and proton-lead collisions are presented. The data were taken with the large acceptance HARP detector in the T9 beam line of the CERN PS. The pions were produced by proton beams in a momentum range from 3 GeV/c to 12.9 GeV/c hitting a target with a thickness of 5% of a nuclear interaction length.

37 data tables

Double-differential cross section for inclusive PI+ production in the LAB system with the BE target for a PI+ polar angle from 0.35 to 0.55 radians.

Double-differential cross section for inclusive PI+ production in the LAB system with the BE target for a PI+ polar angle from 0.55 to 0.75 radians.

Double-differential cross section for inclusive PI+ production in the LAB system with the BE target for a PI+ polar angle from 0.75 to 0.95 radians.

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Large-angle production of charged pions by 3-GeV/c - 12.9-GeV/c protons on beryllium, aluminium and lead targets

The HARP collaboration Catanesi, M.G. ; Radicioni, E. ; Edgecock, R. ; et al.
Eur.Phys.J. C54 (2008) 37-60, 2008.
Inspire Record 761543 DOI 10.17182/hepdata.51357

Measurements of the double-differential $\pi^{\pm}$ production cross-section in the range of momentum $100 \MeVc \leq p &lt; 800 \MeVc$ and angle $0.35 \rad \leq \theta &lt; 2.15 \rad$ in proton--beryllium, proton--aluminium and proton--lead collisions are presented. The data were taken with the HARP detector in the T9 beam line of the CERN PS. The pions were produced by proton beams in a momentum range from 3 \GeVc to 12.9 \GeVc hitting a target with a thickness of 5% of a nuclear interaction length. The tracking and identification of the produced particles was performed using a small-radius cylindrical time projection chamber (TPC) placed inside a solenoidal magnet. Incident particles were identified by an elaborate system of beam detectors. Results are obtained for the double-differential cross-sections at six incident proton beam momenta (3 \GeVc, 5 \GeVc, 8 \GeVc, 8.9 \GeVc (Be only), 12 \GeVc and 12.9 \GeVc (Al only)) and compared to previously available data.

54 data tables

Double-differential cross section for PI+ production from BE in the LAB system for PI+ polar angle from 0.35 to 0.55 radians.

Double-differential cross section for PI+ production from BE in the LAB system for PI+ polar angle from 0.55 to 0.75 radians.

Double-differential cross section for PI+ production from BE in the LAB system for PI+ polar angle from 0.75 to 0.95 radians.

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Measurement of the production of charged pions by protons on a tantalum target

The HARP collaboration Catanesi, M.G. ; Radicioni, E. ; Edgecock, R. ; et al.
Eur.Phys.J. C51 (2007) 787-824, 2007.
Inspire Record 752890 DOI 10.17182/hepdata.51527

A measurement of the double-differential cross-section for the production of charged pions in proton--tantalum collisions emitted at large angles from the incoming beam direction is presented. The data were taken in 2002 with the HARP detector in the T9 beam line of the CERN PS. The pions were produced by proton beams in a momentum range from 3 \GeVc to 12 \GeVc hitting a tantalum target with a thickness of 5% of a nuclear interaction length. The angular and momentum range covered by the experiment ($100 \MeVc \le p &lt; 800 \MeVc$ and $0.35 \rad \le \theta &lt;2.15 \rad$) is of particular importance for the design of a neutrino factory. The produced particles were detected using a small-radius cylindrical time projection chamber (TPC) placed in a solenoidal magnet. Track recognition, momentum determination and particle identification were all performed based on the measurements made with the TPC. An elaborate system of detectors in the beam line ensured the identification of the incident particles. Results are shown for the double-differential cross-sections ${{\mathrm{d}^2 \sigma}} / {{\mathrm{d}p\mathrm{d}\theta}}$ at four incident proton beam momenta (3 \GeVc, 5 \GeVc, 8 \GeVc and 12 \GeVc). In addition, the pion yields within the acceptance of typical neutrino factory designs are shown as a function of beam momentum. The measurement of these yields within a single experiment eliminates most systematic errors in the comparison between rates at different beam momenta and between positive and negative pion production.

18 data tables

Double-differential cross section for PI+ production in the LAB system for PI+ polar angle from 0.35 to 0.55 radians.

Double-differential cross section for PI+ production in the LAB system for PI+ polar angle from 0.55 to 0.75 radians.

Double-differential cross section for PI+ production in the LAB system for PI+ polar angle from 0.75 to 0.95 radians.

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Large-angle production of charged pions by 3-GeV/c - 12-GeV/c protons on carbon, copper and tin targets

The HARP collaboration Catanesi, M.G. ; Edgecock, R. ; Ellis, Malcolm ; et al.
Eur.Phys.J. C53 (2008) 177-204, 2008.
Inspire Record 761546 DOI 10.17182/hepdata.51401

A measurement of the double-differential $\pi^{\pm}$ production cross-section in proton--carbon, proton--copper and proton--tin collisions in the range of pion momentum $100 \MeVc \leq p &lt; 800 \MeVc$ and angle $0.35 \rad \le \theta &lt;2.15 \rad$ is presented. The data were taken with the HARP detector in the T9 beam line of the CERN PS. The pions were produced by proton beams in a momentum range from 3 \GeVc to 12 \GeVc hitting a target with a thickness of 5% of a nuclear interaction length. The tracking and identification of the produced particles was done using a small-radius cylindrical time projection chamber (TPC) placed in a solenoidal magnet. An elaborate system of detectors in the beam line ensured the identification of the incident particles. Results are shown for the double-differential cross-sections at four incident proton beam momenta (3 \GeVc, 5 \GeVc, 8 \GeVc and 12 \GeVc).

54 data tables

Double-differential cross section for PI+ production from C in the LAB system for PI+ polar angle from 0.35 to 0.55 radians.

Double-differential cross section for PI+ production from C in the LAB system for PI+ polar angle from 0.55 to 0.75 radians.

Double-differential cross section for PI+ production from C in the LAB system for PI+ polar angle from 0.75 to 0.95 radians.

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Observation of antihelium-3

Antipov, Yu.M. ; Denisov, S.P. ; Donskov, S.V. ; et al.
Nucl.Phys. B31 (1971) 235-252, 1971.
Inspire Record 68563 DOI 10.17182/hepdata.41500

3 H̃e nuclei were observed in the negative beam, produced by 70 GeV protons on an Al target. Five 3 H̃e have been identified among 2.4 · 10 11 particles that passed through the apparatus. Scintillation and Čerenkov counters were used to measure the electrical charge and velocity of particles. The mass of 3 H̃e is found to be M 3 H ̃ e = (1.00 ± 0.03)3m p , the charge is z = (0.99 ± 0.03)2 e . The ratio of differential production cross sections of 3 H ̃ e (P = 20 GeV /c) and π − (P = 10 GeV/c ) equals 2 · 10 −11 . This corresponds to antihelium −3 production cross section d 2 σ 3 H ̃ e / d Ω d P = 2.0 · 10 −35 cm 2 / sr · GeV /c per Al nuclei and 2.2 · 10 −36 cm 2 sr · GeV/ c per nucleon.

2 data tables

No description provided.

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Observation of antitritium

Vishnevsky, N.K. ; Grachev, M.I. ; Rykalin, V.I. ; et al.
Yad.Fiz. 20 (1974) 694-708, 1974.
Inspire Record 95006 DOI 10.17182/hepdata.18359
3 data tables

No description provided.

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PRODUCTION OF HIGH MOMENTUM NEGATIVE PIONS BY 800-MEV PROTONS AT 0-DEGREES TO 20-DEGREES

Barlow, D.B. ; Nefkens, B.M.K. ; Pillai, C.T. ; et al.
Nucl.Instrum.Meth. A271 (1988) 471-474, 1988.
Inspire Record 270458 DOI 10.17182/hepdata.37244

The π − yield in the momentum range 500–740 MeV/ c produced by 800 MeV protons incident on targets of Be and C has been measured at laboratory production angles between 0° and 20°. The yield of 725 MeV/ c π − from Be and C at 0° is a factor of 6 greater than at 20°, for 600 MeV/ c π − the factor is 3. The yield from beryllium is typically 30% higher than from carbon.

2 data tables

No description provided.

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