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Measurement of analyzing powers of pi + and pi - produced on a hydrogen and a carbon target with a 22-GeV/c incident polarized proton beam

Allgower, C.E. ; Krueger, K.W. ; Kasprzyk, T.E. ; et al.

Phys.Rev.D 65 (2002) 092008, 2002.

Inspire Record 587580 DOI 10.17182/hepdata.22221

The analyzing powers of π+ and π− were measured using an incident 22−GeV/c transversely polarized proton beam at the Brookhaven Alternating Gradient Synchrotron. A magnetic spectrometer measured π± inclusive asymmetries on a hydrogen and a carbon target. An elastic polarimeter with a CH2 target measured pp elastic-scattering asymmetries to determine the beam polarization using published data for the pp elastic analyzing power. Using the beam polarization determined from the elastic polarimeter and asymmetries from the inclusive spectrometer, analyzing powers AN for π± were determined in the xF and pT ranges (0.45–0.8) and (0.3–1.2 GeV/c), respectively. The analyzing power results are similar in both sign and character to other measurements at 200 and 11.7 GeV/c, confirming the expectation that high-energy pion inclusive analyzing powers remain large and relatively energy independent. This suggests that pion inclusive polarimetry may be a suitable method for measuring future beam polarizations at BNL RHIC or DESY HERA. Analyzing powers of π+ and π− produced on hydrogen and carbon targets are the same. Various models to explain inclusive analyzing powers are also discussed.

7 data tables

Table 1

Analyzing power measurements for PI+ and PI- production on the carbon target at incident momentum 21.6 GeV. See text of article for definitions of method 'A' and 'B'.

Table 2

Analyzing power measurements for inclusive PI- production from the hydrogen target.

Table 3

Analyzing power measurements for inclusive PI+ production from the hydrogen target.

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CUMULATIVE PION PRODUCTION AT 0.6-GeV/c TO 1.62-GeV/c MOMENTA IN p A ---> pi+- X REACTIONS AT THE PROTON ENERGY RANGE OF 10-GeV TO 14-GeV

Boyarinov, S.V. ; Gerzon, S.A. ; Kiselev, Yu.T. ; et al.

ITEP-5-1987, 1987.

Inspire Record 245435 DOI 10.17182/hepdata.40055

None

8 data tables

Table 1

No description provided.

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Production of Cumulative Protons at Momenta 0.6-{GeV}/$c$ to 1.83-{GeV}/$c$

Boyarinov, S.V. ; Gerzon, S.A. ; Kats, M.M. ; et al.

Sov.J.Nucl.Phys. 46 (1987) 871, 1987.

Inspire Record 233179 DOI 10.17182/hepdata.40173

None

3 data tables

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A-DEPENDENCE OF PI MESON CUMULATIVE PRODUCTION CROSS-SECTIONS IN PROTON NUCLEAR COLLISIONS. (IN RUSSIAN)

Bondarev, V.K. ; Zarubin, P.I. ; Litvinenko, A.G. ; et al.

Dubna Jinr - 84-N04A (84,REC.JAN.85) 4p, 1985.

Inspire Record 215608 DOI 10.17182/hepdata.38302

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Multiplicity, Momentum and Angular Characteristics of $\pi^-$ Mesons for $p$ C, $d$ C, $\alpha$ C and C C Interactions at 4.2-{GeV}/$c$ Per Nucleon

The Alma Ata-Baku-Belgrade-Bucharest-Dubna-Kishinev-Leipzig- Moscow-Prague-Samarkand-Sofiya-Tashkent-Tbilisi-Ulan Bator-Varna collaboration Agakishiev, G.N. ; Akhababian, N. ; Armutliisky, D. ; et al.

Z.Phys.C 27 (1985) 177, 1984.

Inspire Record 203342 DOI 10.17182/hepdata.1999

Light ion collisions with carbon target at 4.2 GeV/c/N are studied. Pion multiplicity distributions, momentum and angular spectra are analysed. These data are described in terms of models assuming independent interactions of nucleons from the projectile nucleus with the target.

18 data tables

Table 1

No description provided.

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CUMULATIVE HADRON PROPERTIES IN P C INTERACTIONS AT 10-GEV/C, ACCOMPANIED BY THE EMISSION OF CUMULATIVE PROTONS OR PIONS. (IN RUSSIAN)

Agakishiev, G.N. ; Armutliisky, D. ; Akhababian, N.O. ; et al.

Dubna Jinr - 84-235 (84,REC.JUN.) 8p, 1984.

Inspire Record 205301 DOI 10.17182/hepdata.9907

None

14 data tables

Table 1

No description provided.

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HIGH P(T) HADRON PRODUCTION OFF NUCLEI AT 70-GeV

Abramov, V.V. ; Baldin, B.Yu. ; Buzulutskov, A.F. ; et al.

Z.Phys.C 24 (1984) 205-215, 1984.

Inspire Record 197457 DOI 10.17182/hepdata.40973

Invariant cross sections for hadron production (π±,K±,p and$\bar p$) by protons off C, Al, Cu, Sn and Pb nuclei have been measured at 70 GeV for theP∧ range from 1 up to 4.65 GeV/c. TheA-dependence of the invariant cross section is not described by the exponentialAα(P∧), which points to the presence of secondary hadron absorption in nuclei.

30 data tables

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