Bourquin, M.
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Polarization of Sigma+ hyperons produced by 800-GeV/c protons on Cu and Be.

The SELEX collaboration Pogodin, P. ; Alkhazov, G. ; Atamantchouk, A.G. ; et al.
Phys.Rev.D 70 (2004) 112005, 2004.
Inspire Record 629483 DOI 10.17182/hepdata.42834

We show that Σ+ hyperons produced by 800 GeV/c protons on targets of Be and Cu have significant polarizations (15–20%). These polarizations persist at values of pt≈2  GeV/c and a wide range of xF. The polarizations from the Cu target are consistently less than from Be. The average ratio of the Σ+ polarization from Cu to that from Be is 0.68±0.08.

2 data tables
Table 1

Measured values of the SIGMA+ polarization as functions of PT and XL for proton CU collisions.

Table 2

Measured values of the SIGMA+ polarization as functions of PT and XL for proton BE collisions.


$P_{\tau}$ and $X_F$ Dependence of the Polarization of $\Sigma^+$ Hyperons Produced by 800-GeV/c Protons

The E761 collaboration Morelos Pineda, Antonio ; Albuquerque, I.F. ; Bondar, N.F. ; et al.
Phys.Rev.D 52 (1995) 3777-3780, 1995.
Inspire Record 360549 DOI 10.17182/hepdata.42500

We utilize the angle and momentum resolution of our apparatus to study the polarization of 375 GeV/c Σ+ hyperons produced by 800 GeV/c protons incident on a Cu target. By examining in detail two of our high statistics data samples, we find evidence for structure in the pt dependence of Σ+ polarization and are able to extract the xF dependence of the Σ+ polarization and compare it with xF behavior in the Λ0 and Ξ− systems.

9 data tables
Table 1

0.9 mrad horizontal sample.

Table 2

2.9 mrad horizontal sample.

Table 3

3.3 mrad horizontal sample.

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Measurement of the Magnetic Moments of $\Sigma^+$ and $\bar{\Sigma}$ Hyperons

The E761 collaboration Morelos Pineda, Antonio ; Albuquerque, I.F. ; Bondar, N.F. ; et al.
Phys.Rev.Lett. 71 (1993) 3417-3420, 1993.
Inspire Record 359369 DOI 10.17182/hepdata.19719

We have measured the magnetic moments of the Σ+ and Σ¯ − hyperons produced by 800-GeV protons incident on a Cu target. We determine the Σ+ magnetic moment to be (2.4613±0.0034±0.0040)μN where the uncertainties are statistical and systematic, respectively. In this first measurement we determine the magnetic moment of the Σ¯ − to be -(2.428±0.036±0.007)μN. The magnetic moments of the Σ+ and Σ¯ − are consistent with each other in magnitude but opposite in sign as required by CPT invariance.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Polarization of $\Sigma^+$ and $\bar{\Sigma^-}$ Hyperons Produced by 800-GeV/c Protons

The E761 collaboration Morelos Pineda, Antonio ; Albuquerque, I.F. ; Bondar, N.F. ; et al.
Phys.Rev.Lett. 71 (1993) 2172-2175, 1993.
Inspire Record 356301 DOI 10.17182/hepdata.19722

We have mesured the polarization of 375-GeV/c Σ+ and Σ¯ − hyperons produced by 800-GeV/c protons incident on a Cu target. We find that the Σ+ polarization rises with increasing pt to a maximum of 16% at pt=1.0 GeV/c and then decreases to 10% at pt=1.8 GeV/c. We compare this Σ+ polarization with data at lower energies. The Σ¯ − polarization has been measured for the first time. It has the same sign as the Σ+ but smaller magnitude in a similar kinematical region.

4 data tables
Table 1

Data from Horizontal targeting.

Table 2

Data from Vertical targeting.

Table 3

Data from Horizontal targeting.

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Polarization of $\Sigma^+$ Hyperons Produced by 400 GeV Protons

Wilkinson, C. ; Handler, R. ; Lundberg, B. ; et al.
Phys.Rev.Lett. 46 (1981) 803-806, 1981.
Inspire Record 169869 DOI 10.17182/hepdata.20646

The polarization of 26 000 Σ+ hyperons produced by 400-GeV protons on Be has been measured. The polarizations of Σ+ and Λ hyperons have the opposite sign. The magnitude increases with momentum at 5-mrad production angle, and averages 22% over the momentum range 140 to 280 GeV/c.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Charged Baryon and Anti-baryon Production in the Fragmentation Region by 240-{GeV} Protons

The Bristol-Geneva-Heidelberg-Orsay-Rutherford-Strasbourg collaboration Bourquin, M. ; Brown, R.M. ; Chatelus, Y. ; et al.
Z.Phys.C 5 (1980) 275, 1980.
Inspire Record 153261 DOI 10.17182/hepdata.15026

Measurements of the production inp-BeO collisions of charged baryons and antibaryons with strangeness between −3 and +3 at\(\sqrt s= 21.2GeV\)x=0.48, andpT=600MeV/c are reported. The experimental results can be interpreted within the framework of a simple proton fragmentation-recombination model.

5 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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