HEPData Search

The analyzing power AN in inclusive π0 production has been measured with use of the new 185-GeV/c Fermilab polarized proton beam. We obtain the value AN=0.10±0.03 for π0's in the kinematic region 0.2<xF<0.8 and 0.3<pT<1.2 GeV/c. In certain models of particle production this suggests that the spin of the proton is carried by its valence quarks.

7 data tables

Table 1

No description provided.

Table 2

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Table 3

Individual polarisation measurements.

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LAMBDA (1520) PRODUCTION IN NEUTRON - NUCLEON INTERACTIONS AT approximately 40-GeV NEUTRON ENERGY

Krastev, V.R. ; Aleev, A.N. ; Arefev, V.A. ; et al.

JINR-P1-88-31, 1988.

Inspire Record 261871 DOI 10.17182/hepdata.9450

None

6 data tables

Table 1

AVERAGE OVER ALL TARGETS.

Table 2

No description provided.

Table 3

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Observation of the Decay $\rho \to \pi^+ \pi^- \gamma$. (In Russian)

Vasserman, I.B. ; Golubev, V.B. ; Dolinsky, S.I. ; et al.

Sov.J.Nucl.Phys. 47 (1988) 1035-1037, 1988.

Inspire Record 272215 DOI 10.17182/hepdata.37130

None

2 data tables

Table 1

No description provided.

Table 2

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DIFFRACTIVE DISSOCIATION OF NEUTRONS IN LAMBDA0 K0 ON HYDROGEN AT ABOUT 40-GeV ENERGY

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

JINR-P1-88-51, 1988.

Inspire Record 261900 DOI 10.17182/hepdata.38806

None

4 data tables

Table 1

No description provided.

Table 2

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Table 3

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Production of cumulative deuterons and tritons with momenta 0.6-GeV/c to 1.83-GeV/c.

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

Sov.J.Nucl.Phys. 47 (1988) 600-604, 1988.

Inspire Record 272921 DOI 10.17182/hepdata.40111

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

MEASUREMENT OF THE FORM-FACTOR FOR THE DECAY K- ---> PI0 E- ANTI-NEUTRINO

Bolotov, V.N. ; Gninenko, S.N. ; Dzhilkibaev, R.M. ; et al.

JETP Lett. 47 (1988) 7-11, 1988.

Inspire Record 271435 DOI 10.17182/hepdata.16819

None

1 data table

Table 1

No description provided.

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

Table 1

No description provided.

Table 2

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Table 3

No description provided.

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