Donskov, S.V.
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Investigation of the OZI selection rule for connected quark diagrams in hadronic processes. III: Diffractive Phi and omega production in p N collisions at 70-GeV.

The SPHINX collaboration Vavilov, D.V. ; Viktorov, V.A. ; Golovkin, S.V. ; et al.
Phys.Atom.Nucl. 59 (1996) 1186-1190, 1996.
Inspire Record 406501 DOI 10.17182/hepdata.40526

None

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

This ratio is corrected for the different phase space of the (P PHI) and (P OMEGA) system.


Further study of the quasi-exclusive reactions of the neutral mesons production by 70-GeV protons in p N interactions in the deep fragmentation region. (Revised version, in Russian)

The SPHINX collaboration Vavilov, D.V. ; Viktorov, V.A. ; Golovkin, S.V. ; et al.
IFVE-95-138, 1995.
Inspire Record 406502 DOI 10.17182/hepdata.40645

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.


rivet Analysis
Studies of topological distributions of inclusive the three and four jet events in anti-P P collisions at s**(1/2) = 1800-GeV with the D0 detector

The D0 collaboration Abachi, S. ; Abbott, B. ; Abolins, M. ; et al.
Phys.Rev.D 53 (1996) 6000-6016, 1996.
Inspire Record 399364 DOI 10.17182/hepdata.11124

The global topologies of inclusive three-- and four--jet events produced in $\pp$ interactions are described. The three-- and four--jet events are selected from data recorded by the D\O\ detector at the Tevatron Collider operating at a center--of--mass energy of $\sqrt{s} = 1800$ GeV. The measured, normalized distributions of various topological variables are compared with parton--level predictions of tree--level QCD calculations. The parton--level QCD calculations are found to be in good agreement with the data. The studies also show that the topological distributions of the different subprocesses involving different numbers of quarks are very similar and reproduce the measured distributions well. The parton shower Monte Carlo generators provide a less satisfactory description of the topologies of the three-- and four--jet events.

29 data tables
Table 1

The estimated systematic uncertainty is 6 PCT.

Table 2

The estimated systematic uncertainty is 6 PCT.

Table 3

The estimated systematic uncertainty is 6 PCT.

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Measurement of J / psi, psi-prime and upsilon total cross-sections in 800-GeV/c p - Si interactions

The E771 collaboration Alexopoulos, T ; Antoniazzi, L ; Arenton, M ; et al.
Phys.Lett.B 374 (1996) 271-276, 1996.
Inspire Record 400873 DOI 10.17182/hepdata.42316

We report on the analysis of Charmonium and Bottomium states produced in p-Si interactions at s =38.7 GeV . The data have been collected with the open geometry spectrometer of the E771 Experiment at the FNAL High Intensity Lab. J ψ , ψ′ and γ total cross sections as well as the ratio B(ψ′ → μμ)σ(ψ′) (B( J ψ → μμ)σ( J ψ )) have been measured. Results are compared with theoretical predictions and with results at other energies.

3 data tables
Table 1

The total inclusive cross section per nucleon has been evaluated assuming an atomic weight dependence of A**POWER with POWER = 0.920 +- 0.008.

Table 2

combined UPSI(1S) and UPSI(2S) cross section.

Table 3

No description provided.


Determination of form-factor parameters lambda+ and lambda0 in K(mu3) decay.

Artemov, V.M. ; Volkov, A.D. ; Emelyanenko, G.A. ; et al.
Phys.Atom.Nucl. 60 (1997) 218-223, 1997.
Inspire Record 404831 DOI 10.17182/hepdata.38592

None

1 data table
Table 1

Formfactors F+ and F0 are parameterized as usual F+(0) = F(0)*(1 + CONST*(T/M(PI)**2)).


Study of quark line selection rule (OZI rule) in hadron processes. 1. Charge exchange OZI suppressed reaction pi- + p ---> phi + n at P(pi-) = 32-GeV/c

Viktorov, V.A. ; Golovkin, S.V. ; Dorofeev, V.A. ; et al.
Phys.Atom.Nucl. 59 (1996) 1175-1183, 1996.
Inspire Record 405705 DOI 10.17182/hepdata.40543

None

1 data table
Table 1

Axis error includes +- 0.0/0.0 contribution (?////RES-DEF(RES=PHI,BACK=CORRECTED)//DECAY-BR(BRN=PHI --> K+ K-,BR=0.49 +- 0.01)).


Study of Charged Hadronic Four-Body Decays of the $D^0$ Meson

The E687 collaboration Frabetti, P.L. ; Cheung, H.W.K. ; Cumalat, John P. ; et al.
Phys.Lett.B 354 (1995) 486-493, 1995.
Inspire Record 395966 DOI 10.17182/hepdata.21354

Charged hadronic four-body decays of D 0 mesons have been studied in the E687 photoproduction experiment at Fermilab. Branching ratios relative to the D 0 → K − π + π + π − decay mode for the Cabibbo-suppressed decays D 0 → π − π + π − π + , D 0 → K − K + π − π + have been measured and the first evidence of the D 0 → K − K + K − π + decay mode is reported. An analysis of the D 0 → K − K + π − π + resonance structure is also presented.

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Total cross-section measurements for muon-neutrino, anti-muon-neutrino interactions in 3-GeV - 30-GeV energy range with IHEP-JINR neutrino detector

Anikeev, V.B. ; Belikov, S.V. ; Borisov, A.A. ; et al.
Z.Phys.C 70 (1996) 39-46, 1996.
Inspire Record 400486 DOI 10.17182/hepdata.40711

The results of total cross section measurements for theνμ,\(\bar \nu _\mu\) interactions with isoscalar target in the 3 – 30 GeV energy range have been presented. The data were obtained with the IHEP-JINR Neutrino Detector in the “natural” neutrino beams of the U-70 accelerator. Neutrino fluxes were obtained by averaging the spectra, based on the calculations with the use of the experimental data on secondary particle yields from the target and muon fluxes measurements in 9 gaps of the muon filter, as well as the spectra determined from quasi-elastic events and spectra defined by extrapolating differential distributiondσ/dy in the regiony=0. The significant deviation from the linear dependence forσtot versus neutrino energy is determined in the energy range less than 15 GeV.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Observation of the top quark

The D0 collaboration Abachi, S. ; Abbott, B. ; Abolins, M. ; et al.
Phys.Rev.Lett. 74 (1995) 2632-2637, 1995.
Inspire Record 393099 DOI 10.17182/hepdata.42452

The DO collaboration reports on a search for the Standard Model top quark in pbar-p collisions at Sqrt(s)=1.8TeV at the Fermilab Tevatron, with an integrated luminosity of approximately 50pb-1. We have searched for t-tbar production in the dilepton and single-lepton decay channels, with and without tagging of b-quark jets. We observed 17 events with an expected background of 3.8+/-0.6 events. The probability for an upward fluctuation of the background to produce the observed signal is 2.0E-6 (equivalent to 4.6 standard deviations). The kinematic properties of the excess events are consistent with top quark decay. We conclude that we have observed the top quark and measure its mass to be 199~+19_21 (stat.)+/- 22 (syst.)GeV/c**2 and its production cross section to be 6.4 +/- 2.2 pb.

1 data table
Table 1

Cross section refers to top quark mass equal 199. (+19, -21, +- 22) GeV.


Coupled channel analysis of anti-p p annihilation into pi0 pi0 pi0, pi0 eta eta and pi0 pi0 eta

The Crystal Barrel collaboration Amsler, C. ; Armstrong, D.S. ; Baker, C.A. ; et al.
Phys.Lett.B 355 (1995) 425-432, 1995.
Inspire Record 406130 DOI 10.17182/hepdata.28523

We confirm the existence of the two I G ( J PC ) = 0 + (0 ++ ) resonances f 0 (1370) and f 0 (1500) reported by us in earlier analyses. The analysis presented here couples the final states π 0 π 0 π 0 , π 0 π 0 η and π 0 ηη of p p annihilation at rest. It is based on a 3 × 3 K -matrix. We find masses and widths of M = (1390±30) MeV, Γ = (380±80) MeV; and M = (1500±10) MeV, Γ = (154 ± 30) MeV, respectively. The product branching ratios for the production and decay into π 0 π 0 and ηη of the f 0 (1500) are (1.27 ± 0.33) · 10 −3 and (0.60 ± 0.17) · 10 −3 , respectively.

1 data table
Table 1

No description provided.