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Results of fitting the differential distributions in x F and p T 2 of D mesons produced in 400 GeV/ c p-p interactions to the form d 2 σ d x F d p T 2 ∝(1−x F ) n exp [−(p T 2 /〈p T 2 〉)] are discussed. The D + distribution is found to be relatively hard [ n =3.1±0.8〈 P t 2 〉=1.32±0.27 (GeV/ c ) 2 ] and the D̄ 0 distribution relatively soft [ n =8.1±1.9,〈 p T 2 〉=0.62±0.14 (GeV/ c ) 2 ] compared to the average for all D's [ n =4.9±0.5,〈 p T 2 〉=0.99±0.10 (GeV/ c ) 2 ]. It is suggested that these distributions could reflect contribution of leading di-quarks in pp collisions. Comparison is made with evidence for leading quarks in charm production in 360 GeV/ cπ − p interactions.

1 data table

Table 1

The invariant (C=INV) and non-invariant (C=NON-INV) distributions are fitted to (1-XL)**POWER. Pt distribution is fitted to EXP(-PT**2/SLOPE).

$D$ Meson Production From 400 GeV/$c p p$ Interactions

The LEBC-EHS collaboration Aguilar-Benitez, M. ; Allison, W.W.M. ; Bailly, J.L. ; et al.

Phys.Lett.B 189 (1987) 476, 1987.

Inspire Record 245101 DOI 10.17182/hepdata.12913

We have measured the inclusive production properties of D and D messons produced from pp interactions at s =27.4 GeV . The differential production cross section is well represented by the empirical form d 2 σ d x F d P 2 T = 1 2 [σ ( D / D )(n+1)b](1−|x F |) n exp (−bp 2 T ) with n=4.9 ± 0.5, b=(1.0±0.1)( GeV /c) −2 , and the inclusive D / D cross section σ ( D / D ) is (30.2±3.3) ωb. The QCD fusion model predicts D / D production which is in good agreement with our data except for the magnitude of the cross section which depends sensitively on the assumed mass of the charm quark.

11 data tables

Table 1

No description provided.

Table 2

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INVESTIGATION OF COMPTON EFFECT ON pi MESON AND CHARGED PION POLARIZABILITY

The SIGMA-AYaKS & Dubna-Serpukhov-Tbilisi collaborations Antipov, Yu.M. ; Batarin, V.A. ; Bezzubov, V.A. ; et al.

JINR-P1-86-710, 1986.

Inspire Record 239905 DOI 10.17182/hepdata.9549

None

4 data tables

Table 1

No description provided.

Table 2

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Table 3

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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.

Table 2

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.

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

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Table 3

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Anti-D0 meson production in interactions of neutrons with hydrogen, carbon, and aluminum nuclei at 37.5-GeV to 70-GeV

Observation of D0 ---> K+ pi- rho0 produced in interactions of 40-GeV - 70-GeV neutrons with hydrogen, carbon and aluminum

MOMENTUM AND ANGULAR DISTRIBUTIONS OF pi- MESONS PRODUCED IN d C INTERACTIONS AT 1-GeV/N

$D$ Meson Production From 400-{GeV}/$c p p$ Interactions. Evidence for Leading Diquarks?

$D$ Meson Production From 400 GeV/$c p p$ Interactions

INVESTIGATION OF COMPTON EFFECT ON pi MESON AND CHARGED PION POLARIZABILITY

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

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

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