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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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Dependence of spectra and cross-sections yield of proton at the energy more than 0.4-GeV at fixed angles on atomic weights of colliding nuclei in nucleus-nucleus interactions

Agakishiev, G.N. ; Bekmirzaev, R. ; Kanarek, T. ; et al.

Phys.Atom.Nucl. 56 (1993) 1397-1405, 1993.

Inspire Record 345328 DOI 10.17182/hepdata.17221

None

3 data tables

Table 1

No description provided.

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No description provided.

High $p_T$ Deuteron and Anti-deuteron Production in $p p$ and $p$ a Collisions at 70-{GeV}

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

Sov.J.Nucl.Phys. 45 (1987) 845, 1987.

Inspire Record 230030 DOI 10.17182/hepdata.40804

None

8 data tables

Table 1

Axis error includes +- 0.0/0.0 contribution (?////DUE TO ABSORPTION CORRECTIONS//THE CORRECTION TO THE RATIO DEUT/P DUE TO DIFFERENCE OF PARTICLE ABSORPTION IN CHERENKOV COUNTERS WERE DETERMINED EXPERIMENTALLY (IN THE RANGE 6-45 PCT). THERE WAS THE CORRECTION OF ABOUT 19 PCT FOR ABSORPTION IN THE OTHER PARTS OF THE SPECTROMETER).

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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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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

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No description provided.

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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

Dependence of spectra and cross-sections yield of proton at the energy more than 0.4-GeV at fixed angles on atomic weights of colliding nuclei in nucleus-nucleus interactions

High $p_T$ Deuteron and Anti-deuteron Production in $p p$ and $p$ a Collisions at 70-{GeV}

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

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

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

Observation of Baryons With High Transverse Momenta in $p$, $d$, He and C Nuclear Interactions With Tantalum Nuclei at 4.2-{GeV}/$c$

Estimation of Hadron Formation Length in High p$_T$ Processes in Protonnucleus Collisions at 70 GeV

Production of Hadrons at $p_T$ From 0.5-{GeV}/$c$ to 2.5-{GeV}/$c$ in Proton - Nucleus Collisions at 70-{GeV} Energy

INCLUSIVE SPECTRA OF PROTONS AND DEUTERONS EMITTED AT AN ANGLE OF 162-degrees FROM PROTON NUCLEON INTERACTIONS AT 2.2-GeV/c, 6-GeV/c AND 8.5-GeV/c