Preedom, B.m.
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BACKWARD PRODUCTION OF THE B (1235) MESON IN 11.46-GEV/C PI+ P INTERACTIONS

Wong, M.K. ; Key, A.W. ; Schwarzschild, B.M. ; et al.
Phys.Rev.Lett. 46 (1981) 974, 1981.
Inspire Record 169864 DOI 10.17182/hepdata.20643

Evidence for the backward production of the B(1235) meson in the final state π+p→pfπ+ω at 11.46 GeV/c with σ(|u′|<1.5 GeV2)=1.28±0.26 μb is presented. When nucleon exchange is assumed to dominate, estimates for the SU(3) mixing parameter FD as well as the B coupling to the nucleon-antinucleon are given. Some indication of a narrow enhancement at M(π+ω)≃1.03 GeV/c2 is seen, but confirmation of this as a resonant state is not yet possible.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


The Effective Energy Dependence of the Charged Particle's Multiplicity in $P / \pi^+ / K^+$ Interactions on Protons at 147 GeV/c

Brick, D. ; Rudnicka, H. ; Shapiro, A.M. ; et al.
Phys.Lett.B 103 (1981) 241-246, 1981.
Inspire Record 170358 DOI 10.17182/hepdata.6707

The energy dependence of the average of the charged multiplicity and its dispersion in π + /K + /p interaction on protons at 147 GeV/ c is found to be the same as in e + e − annihilations if an “effective energy” variable is used instead of the total energy. The effective energy S eff is defined as the invariant mass of all secondaries left after the two leading particles have been removed. Fitting the expression aS eff b to the average charge multiplicity 〈 n ch 〉, we find the power b to be in good agreement with the value of 0.25 predicted by Fermi's statistical model and by Landau's hydrodynamical model.

6 data tables
Table 1

BINS IN WEFF SELECTED SO AS TO YIELD 200 EVENTS IN EACH BIN.

Table 2

200 EVENTS IN EACH BIN IN WEFF.

Table 3

50 EVENTS IN EACH BIN IN WEFF.

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INVESTIGATIONS OF THE ANGULAR DISTRIBUTIONS OF PROTONS EMITTED FROM NUCLEI IN pi+, pi-. INTERACTIONS AT MOMENTA OF 1.2-GeV/c TO 7.0-GeV/c

Barkov, B.P. ; Bayukov, Yu.D. ; Bobchenko, B.M. ; et al.
ITEP-58-1980, 1980.
Inspire Record 154421 DOI 10.17182/hepdata.40307

None

6 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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MEASUREMENT OF ELASTIC BACKWARD PI- D SCATTERING FOR 1.57-GEV/C, 1.66-GEV/C AND 1.76-GEV/C. (IN RUSSIAN)

Abramov, B.M. ; Ayrapetov, E.A. ; Bagdasaryan, L.S. ; et al.
Pisma Zh.Eksp.Teor.Fiz. 31 (1980) 147-150, 1980.
Inspire Record 157089 DOI 10.17182/hepdata.39767

None

1 data table

Inclusive Production of Neutral Strange Particles by 147 GeV/c $\pi^+/ K^+/ p$ Interactions in Hydrogen

Brick, D. ; Shapiro, A.M. ; Widgoff, M. ; et al.
Nucl.Phys.B 164 (1980) 1, 1980.
Inspire Record 156268 DOI 10.17182/hepdata.8251

Results are presented from a study of inclusive neutral strange particle production by a 147 GeV/ c tagged π + /K + /p beam in the Fermilab 30-inch hydrogen bubble chamber. The experiment made use of the proportional hybrid spectrometer system. Results are based on 995 K S 0 , 485 Λ, and 83 Λ found in a sample of 132 000 pictures. Cross sections are given for inclusive production of these particles by each of the three beam particles, and comparisons are made with measurements at other energies. Topological cross sections are also calculated, and KNO multiplicity scaling is investigated. Distributions are presented of invariant cross sections as functions of the Feynman scaling variable x and c.m. rapidity y . The transverse momentum-squared distributions with their fitted slopes are also given. Comparisons are made of the production characteristics for the three beam types.

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


OBSERVATION OF ENERGY DEPENDENT STRUCTURE IN BACKWARD pi- d ELASTIC SCATTERING BETWEEN 0.98-GeV/c AND 1.45-GeV/c

Abramov, B.M. ; Ayrapetov, E.A. ; Bagdasaryan, L.S. ; et al.
ITEP-21-1979, 1979.
Inspire Record 140929 DOI 10.17182/hepdata.40258

None

1 data table
Table 1

BEAM ERROR D(P)/P = 0.300 PCT.


$\rho^0$ Production in $\pi^- p$ Interactions at 100, 200 and 360 GeV/c

Higgins, P.D. ; Shephard, W.D. ; Biswas, N.N. ; et al.
Phys.Rev.D 19 (1979) 65, 1979.
Inspire Record 7275 DOI 10.17182/hepdata.4591

Inclusive and semi-inclusive cross sections for gp0 production in 100, 200, and 360 GeV/c π−p interactions are presented. Differential cross sections for ρ0 production as functions of c.m. rapidity and transverse momentum are compared with the corresponding differential cross sections for pion production. Effects of various methods of estimating background on the values obtained for ρ0 production cross sections are discussed. About 10% of the final-state charged pions appear to come from ρ0 decay. Thus, while ρ0 production and decay is a significant source of final-state pions, other sources must contribute the majority of the produced pions.

14 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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DIFFERENTIAL CROSS-SECTION OF THE REACTION pi- p ---> eta0 n AT MOMENTA OF 3.3-GeV/c AND 4.75-GeV/c

Arkhipov, V.V. ; Astvatsaturov, R.G. ; Ivanov, V.I. ; et al.
JINR-E1-11596, 1978.
Inspire Record 131557 DOI 10.17182/hepdata.43766

None

1 data table
Table 1

THE DATA POINTS AT -T = 0.40 AND 0.60 GEV**2 WERE OBTAINED FROM THE PAPER BY J. P. DE BRION ET AL., NP B32, 557 (1971). THESE DATA OF O. GUISAN ET AL., PL 18, 200 (1965) ARE USED TO DETERMINE THE ABSOLUTE NORMALIZATION.


The Differential Cross-Section of the Reaction pi- p --> eta0 n at a Momentum of 3.3-GeV/c

Astvatsaturov, R.G. ; Arkhipov, V.V. ; Boitsova, L.S. ; et al.
Sov.J.Nucl.Phys. 27 (1978) 216, 1978.
Inspire Record 120289 DOI 10.17182/hepdata.19025

None

1 data table
Table 1

No description provided.


Production of pi+ Mesons Induced by Polarized Photons in the Energy Range 220-MeV-280-MeV

Zabaev, V.N. ; Kuznetsov, V.M. ; Potylitsyn, A.P. ; et al.
Yad.Fiz. 21 (1975) 551-555, 1975.
Inspire Record 102841 DOI 10.17182/hepdata.19144

None

11 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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