Gobbi, B.
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Inclusive Baryon Production in e+ e- Annihilation

Piccolo, M. ; Peruzzi, I. ; Luke, D. ; et al.
Phys.Rev.Lett. 39 (1977) 1503, 1977.
Inspire Record 121395 DOI 10.17182/hepdata.20965

The inclusive production of antiprotons and Λ's in e+e− annihilation has been measured as a function of the c.m. energy in the range 3.7-7.6 GeV. We find that the baryon cross section has a behavior different from the total hadronic production. Our results show a rapid rise in the ratio σp¯σμμ between 4.4 and 5 GeV, consistent with what would be expected from charmed baryon production. Λ¯ production is 10-15% of p¯ production at all energies.

1 data table match query
Table 1

NOT INCLUDING SYSTEMATIC ERRORS.


Inclusive Production of $D$ and $K$ Mesons in $e^+ e^-$ Annihilation

Piccolo, M. ; Peruzzi, I. ; Rapidis, P.A. ; et al.
Phys.Lett.B 86 (1979) 220-224, 1979.
Inspire Record 141018 DOI 10.17182/hepdata.27301

We present measurements of the cross section for inclusive D and K meson production in e + e − annihilation in the center of mass energy range 3.6 to 5.8 GeV. D production accounts for most of the increase in the total cross section for hadron production in e + e − annihilation at energies above 4 GeV.

3 data tables match query
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Inclusive Electron Production in Multiprong Events Produced by $e^+ e^-$ Annihilation

Feller, J.M. ; Litke, A. ; Madaras, R. ; et al.
Phys.Rev.Lett. 40 (1978) 1677, 1978.
Inspire Record 129962 DOI 10.17182/hepdata.38080

We have measured inclusive electron production in multiprong events produced by e+e− annihilation in the center-of-mass energy range 3.9-7.4 GeV. We find the electron momentum spectra are consistent with the electrons coming mainly from decays of charmed particles, with a smaller contribution from decays of the τ lepton. From our data we calculate the average branching ratio for charmed particles to decay into an electron plus additional particles to be (8.2±1.9)%.

1 data table match query
Table 1

No description provided.


Search for D0 (1865) Mesons Produced in Association with Prompt Muons in Hadronic Interactions

Spelbring, D. ; Gobbi, B. ; Keren, J. ; et al.
Phys.Rev.Lett. 40 (1978) 605, 1978.
Inspire Record 121095 DOI 10.17182/hepdata.42612

We present the results of a search at Fermilab for the charmed meson, D∘(1865), produced in association with a prompt muon by 300-GeV/c neutrons. We observe no significant enhancement in high-mass K±π∓ systems and report, at the 95% confidence level, an upper limit of 200 nb/nucleon for the production of a pair of charmed particles and their subsequent decay into a K±π∓ state and a prompt muon.

1 data table match query
Table 1

The cross section for D0 and CHARM particle production is obtained with theassumption that BR(D0 --> K- PI+) = 3 PCT and BR(CHARM --> MU+ X) = 15 PCT.


Search for Leptons Produced in Association with Prompt Muons in Hadronic Interactions

Lipton, R. ; Gobbi, B. ; Keren, J. ; et al.
Phys.Rev.Lett. 40 (1978) 608, 1978.
Inspire Record 121096 DOI 10.17182/hepdata.42602

We present the results of a search for leptons produced in coincidence with a prompt muon in neutron-beryllium collisions at 300 GeV/c. The experiment was sensitive to trigger muons and associated leptons of both low momentum and low transverse momentum. A clear μ±μ∓ signal was found, but no significant μ±e∓ signal was observed. We report an upper limit for associated charmed-particle production [σCC¯·B(C→μ+X)·B(C→e+X)] of < 340 nb/nucleon, at the 95% confidence level.

1 data table match query
Table 1

The cross section for CHARM and CHARMBNAR particle production is obtained with the assumption that BR(CHARM --> MU+ X) = 15 PCT.


Inclusive Charged Particle Production in Neutron - Nucleus Collisions

Chaney, D. ; Ferbel, T. ; Slattery, P. ; et al.
Phys.Rev.D 19 (1979) 3210, 1979.
Inspire Record 7658 DOI 10.17182/hepdata.47089

We have measured charged-particle production in neutron-nucleus collisions at high energy. Data on positive and negative particles produced in nuclei [ranging in atomic number (A) from beryllium to lead] are presented for essentially the full forward hemisphere of the center-of-mass system. A rough pion-proton separation is achieved for the positive spectra. Fits of the form Aα to the cross sections are presented as functions of transverse momentum, longitudinal momentum, rapidity, and pseudorapidity. It is found that α changes from ∼0.85 to ∼0.60 for laboratory rapidities ranging from 4 to 8. Trends in the data differ markedly when examined in terms of pseudorapidity rather than rapidity. Qualitatively, the major features of our data can be understood in terms of current particle-production models.

0 data tables match query

Inclusive $\gamma$ and $\pi^0$ Production in $e^+ e^-$ Annihilation

Scharre, D.L. ; Fong, A. ; Pun, T. ; et al.
Phys.Rev.Lett. 41 (1978) 1005, 1978.
Inspire Record 130859 DOI 10.17182/hepdata.20888

We have measured inclusive γ and π0 production in multiprong events produced by e+e− annihilation in the center-of-mass energy range 4.9 to 7.4 GeV. We find the π0 inclusive cross section to be consistent in shape and normalization with half the charged-π cross section between x=0.15 and 0.60, with an integrated inclusive cross-section ratio of σ(π0)|σ(π+)+σ(π−)|=0.47±0.10.

0 data tables match query

Observation of Resonance in the $K^{0}_{1}K^{0}_{1}$ System

Beusch, W. ; Fischer, W.E. ; Gobbi, B. ; et al.
Phys.Lett.B 25 (1967) 357-361, 1967.
Inspire Record 52538 DOI 10.17182/hepdata.29450

We have analyzed 2560 events in the final-state K O 1 K O 1 n produced in π − p interactions at 5, 7 and 12 GeV/ c . We observe the S ∗ (1070), f O and A 2 decaying into K O 1 K O 1 . Resonance parameters, cross sections, and branching ratios are given.

1 data table match query
Table 1

Cross section times branching ratio.


Evidence for Direct $\gamma$ Production at Large $x$ in $\psi$ (3100) Decay

Ronan, M.T. ; Trippe, T.G. ; Barbaro-Galtieri, A. ; et al.
Phys.Rev.Lett. 44 (1980) 367, 1980.
Inspire Record 142946 DOI 10.17182/hepdata.20700

The inclusive γ and π0 momentum spectra from ψ(3100) decay have been measured in e+e− annihilation at SPEAR. When the γ spectrum is compared with that expected from π0 decay, an excess of high-momentum γ's is observed. This excess is compared with that predicted by quantum chromodynamics for the decay of the ψ into a γ and two gluons.

0 data tables match query

Photoproduction of D Mesons

The E-687 collaboration Buchholz, D. ; Frabetti, P.L. ; Bogart, C.W. ; et al.
FERMILAB-FN-0555, 1990.
Inspire Record 300996 DOI 10.17182/hepdata.43002

Preliminary results are presented using the Wide Band photon beam at Fermilab to measure the cross-section of $D^{*\pm}$ and $D^{\pm}$ photoproduction on a Be target over the photon energy range from 100 GeV to 350 GeV....

3 data tables match query
Table 1

INCLUDES THE FOLLOWING DECAYS: D*(2010)+- --> D0 PI+-, D0 --> K- PI+.

Table 2

INCLUDES THE FOLLOWING DECAYS: D*(2010)+- --> D0 PI+-, D0 --> K- PI+, D0 --> K- 2PI+ PI-.

Table 3

INCLUDES THE DECAYS: D+ --> K- 2PI+.