HEPData Search

We have used the spin-precession technique to measure the Σ− magnetic moment (μΣ). A Σ− beam with a polarization of 22% was produced by a 400-GeV proton beam striking a Cu target at nominal production angles of ±3 mrad. We simultaneously recorded 21 000 Σ−→ne−ν¯ decays and 650 000 Σ−→nπ− decays at Σ− beam momenta of 253 and 308 GeV/c. We find μΣ=−1.166±0.014±0.010 nuclear magnetons, where the quoted errors are statistical and systematic, respectively.

1 data table

Table 1

No description provided.

A-dependence of the Production Cross-section of $\Lambda(c$)+ Charmed Baryons in Neutron - Nucleus Interactions

The BIS-2 collaboration Aleev, A.N. ; Arefev, V.A. ; Balandin, V.P. ; et al.

Sov.J.Nucl.Phys. 46 (1987) 657, 1987.

Inspire Record 235393 DOI 10.17182/hepdata.39661

None

1 data table

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EXPERIMENTAL DATA ON AVERAGE NUMBER OF INTERACTED PROTONS IN INELASTIC AND CENTRAL NUCLEUS-NUCLEUS COLLISIONS AT 3.6-GeV/ N

Anikina, M.Kh. ; Abdurakhimov, A.U. ; Avramenko, S.A. ; et al.

Yad.Fiz. 45 (1987) 1680, 1987.

Inspire Record 235082 DOI 10.17182/hepdata.38968

None

17 data tables

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A-dependence of Polarization of $\Lambda^0$ Produced Inclusively in Neutron - Nucleus Interactions

The BIS-2 collaboration Aleev, A.N. ; Arefev, V.A. ; Balandin, V.P. ; et al.

Z.Phys.C 36 (1987) 27, 1987.

Inspire Record 237043 DOI 10.17182/hepdata.39599

TheA-dependence of the polarization ofΛ0,s produced inclusively in neutron-nucleus interactions at a mean neutron momentum of about 40 GeV/c has been measured in an experiment performed using the BIS-2 spectrometer at the Serpukhov accelerator. Carbon, Aluminium and Copper targets were used. TheΛ0,s were produced in the kinematical region of 0.6<pT<1.3 GeV/c and 0.2<xF<0.9. Describing the polarization of theΛ0,s by ℘=a·A a value of (−0.15+0.07/−0.60) was obtained by a fit to our data.

2 data tables

Table 1

POLARIZATION IS DESCRIBED BY A POWER LOW: POL = C*A**B, WHERE C = -1.1, +0.4, -0.3 , A- ATOMIC NUMBER AND B = -0.15, +0.07, -0.6.

Table 2

Production of anti-D0 and D- Mesons in Neutron - Carbon Interactions at 40-GeV to 70-GeV

The BIS-2 collaboration Aleev, A.N. ; Arefev, V.A. ; Balandin, V.P. ; et al.

Z.Phys.C 37 (1988) 243, 1988.

Inspire Record 248611 DOI 10.17182/hepdata.9960

The production of$\bar D$ mesons in neutroncarbon interactions at 40–70 GeV/c has been investigated. The$\bar D$ mesons were detected via the hadronic decay modes$\bar D^0\to K^{* + } (892)\pi ^ -$ andD−→K*+(892)π−π−. In the kinematical regionxF>0.5 andpT<1 GeV/c the following inclusive cross sections were measured:$\sigma _{\bar D^0 }= (28 \pm 14)\mu b$ and$\sigma _{D^ -}= (28 \pm 13)\mu b$ per carbon nucleus. The invariant longitudinal momentum spectra can be described by (1−x)N with$N_{\bar D^0 }= 1.1 \pm 0.5 \pm 0.4$ and$N_{D^ -}= 0.8 \pm 0.4 \pm 0.4$ The transverse momentum spectra were parametrized by exp (−BpT2) with$B_{\bar D^0 }= (1.2_{ - 0.9}^{ + 1.1} )({{GeV} \mathord{\left/ {\vphantom {{GeV} c}} \right. \kern-\nulldelimiterspace} c})^{ - 2} $ and$B_{D^ -}= (1.8_{ - 1.0}^{ + 1.3} )({{GeV} \mathord{\left/ {\vphantom {{GeV} c}} \right. \kern-\nulldelimiterspace} c})^{ - 2} $.

4 data tables

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