Govorun, N.N.
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Observation of a New Charmed Meson.

The ARGUS collaboration Albrecht, H. ; Binder, U. ; Harder, G. ; et al.
Phys.Rev.Lett. 56 (1986) 549, 1986.
Inspire Record 222219 DOI 10.17182/hepdata.20225

Using the ARGUS detector at the DORIS II e+e− storage ring at DESY, we have obtained evidence for a new charmed resonance which decays into D*±(2010)π∓. The observed mass and width are 2420±6 MeV/c2 and 70±21 MeV/c2, respectively. The fragmentation function is found to be hard, as expected for a state containing a leading charm quark produced by nonresonant e+e− annihilation.

2 data tables
Table 1

No description provided.

Table 2

Estimated production cross section obtained by comparison with observed D*(2010) production rate.


Inclusive Production of Hyperons and Anti-hyperons in $N$ C Collisions at an Energy of About 40-{GeV} (In Russian)

The BIS-2 collaboration Aleev, A.N. ; Arefev, V.A. ; Balandin, V.P. ; et al.
Yad.Fiz. 44 (1986) 661-670, 1986.
Inspire Record 239304 DOI 10.17182/hepdata.17456

None

4 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Observation of a Dependence in Koba-nielsen-olesen Scaling Distributions for High-energy Hadron Nucleus Interactions

Biswas, N.N. ; Ting, S.J.Y. ; Mattingly, M.C.K. ; et al.
Phys.Rev.D 33 (1986) 3167-3171, 1986.
Inspire Record 233004 DOI 10.17182/hepdata.23515

Experimental multiplicity distributions scaled in the Koba-Nielsen-Olesen (KNO) form for hadron-nucleus interactions show clear deviations from the scaling distribution observed for hadron-hadron interactions. The deviations become larger as A increases. Our data can be described by a model which invokes the hypothesis that KNO scaling is valid for hadron-nucleus interactions at a fixed impact parameter. In this model, the A dependence of the multiplicity distributions results from the convolution of scatterings at various impact parameters.

6 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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A Measurement of $\pi^- p \to K^0(s$) $K^0(s$) $n$ at 22-{GeV}/$c$ and a Systematic Study of the 2++ Meson Spectrum

Longacre, R.S. ; Etkin, A. ; Foley, K.J. ; et al.
Phys.Lett.B 177 (1986) 223-227, 1986.
Inspire Record 230183 DOI 10.17182/hepdata.30232

A coupled channel analysis has been carried out using a new amplitude analysis of the K 0 s K 0 s system produced in the reaction π − p→K 0 s K 0 s n at 22 GeV/ c , which contained about 40 000 new events in the low- t region (| t − t min |<0.1 GeV 2 ). Here only the I G =0 + , J PC =2 ++ amplitude from this analysis is considered, together with available data from other experiments in channels with the same quantum numbers in order to determine which 2 ++ isoscalar mesons have significant pseudoscalar-pseudoscalar couplings. It is found that four poles, f(1270), f'(1525), θ(1690), and f r (1810), are needed, plus a smooth background in order to fit these data; the need for the θ(1690) depends on the J/ψ radiative decay alone, and the f r (1810) is seen only in hadronic production.

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
Table 1

No description provided.


A Measurement of the Sigma- Magnetic Moment Using the Sigma- ---> n e- anti-neutrino and Sigma- ---> n pi- Decay Modes

Zapalac, G. ; Hsueh, S.Y. ; Muller, D. ; et al.
Phys.Rev.Lett. 57 (1986) 1526, 1986.
Inspire Record 231107 DOI 10.17182/hepdata.42694

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.


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
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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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

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.


Multiplicity, Momentum and Angular Distributions of Protons From the Interactions of $P$, $D$, $\alpha$ and C With Carbon at 4.2-{GeV}/c/nucleon Momentum. Alma-ata-baku-belgrade-bucharest-cracow-dubna-kishinev-leipzig- Moscow-prague-samarkand-sofia-tashkent-tbili

Armutliiski, D. ; Bogdanovic, J. ; Didenko, L.A. ; et al.
Z.Phys.A 328 (1987) 455-461, 1987.
Inspire Record 255393 DOI 10.17182/hepdata.9501

None

17 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Search for Charmed Mesons Produced in Hadronic Interactions

Ginther, G. ; Edelstein, R.M. ; Forsyth, C.P. ; et al.
Phys.Rev.D 35 (1987) 1541-1552, 1987.
Inspire Record 252546 DOI 10.17182/hepdata.23386

The hadronic production of charmed states was studied in a two-arm spectrometer using a 205-GeV/c negative-pion beam incident upon a beryllium target. One arm, filled with dense absorber, triggered the detectors upon the passage of a muon with a moderate transverse momentum and a total momentum of at least 4 GeV/c. The other arm was an open-geometry magnetic spectrometer which had both neutral- and charged-particle identification capabilities. The apparatus, the data, and an invariant-mass-plot search for evidence of charmed-meson production through several charged-particle decay modes are described. The Kπ, Kππ, and Kπππ mass plots fail to reveal significant D-meson signals. Based upon the Kπ mass plots, the 95%-confidence upper limit on the DD¯ production cross section is found to be less than 51 μb per nucleon for the production models tested. A search for evidence of charged-D* production yields 30±16 combinations above background in association with the expected trigger muon charge. Interpreted as a D* signal, this excess corresponds to a model-dependent inclusive DD¯ production cross section of 34±18−9+14 μb per nucleon. Model-dependent upper limits on the ratio of the F to D cross sections are also presented.

4 data tables
Table 1

Uncorrelated model for charmed mesons production.

Table 2

'Correlated' model for pair of charmed mesons production.

Table 3

Uncorrelated model for D/S+- mesons production.

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