Date

CHARGED HADRON INCLUSIVE CROSS-SECTIONS AND FRACTIONS IN e+ e- ANNIHILATION AT S**(1/2) = 29-GeV

The TPC/Two Gamma collaboration Aihara, H. ; Alston-Garnjost, M. ; Avery, R.E. ; et al.
Phys.Rev.Lett. 61 (1988) 1263, 1988.
Inspire Record 262143 DOI 10.17182/hepdata.38102

We report measurements of π±K±, and p, p¯ inclusive cross sections and fractions in e+e− annihilation at s=29 GeV, for the momentum interval 0.01<z=ppbeam<0.90. The analysis is based on approximately 70 pb−1 of data collected with the TPC2γ detector facility at the SLAC storage ring PEP. Detector upgrades result in significantly improved momentum coverage and precision of the data, compared to previous measurements.

7 data tables

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$\eta$ and $\eta^\prime$ Production in $e^+ e^-$ Annihilation at 29-{GeV}: Indications for the $D(s$)+- Decays Into $\eta \pi^\pm$ and $\eta^\prime \pi^\pm$

Wormser, G. ; Abrams, G.S. ; Amidei, D. ; et al.
Phys.Rev.Lett. 61 (1988) 1057, 1988.
Inspire Record 261194 DOI 10.17182/hepdata.20080

η production has been investigated by the Mark II collaboration at the SLAC e+e− storage ring PEP. η particles are reconstructed by their γγ decay mode. The η fragmentation function has been measured and found to be in good agreement with the Lund-model prediction. η′ production has been measured for the first time in high-energy e+e− annihilation. There is evidence at the 3σ level for Ds± decay into ηπ± and η′π±.

4 data tables

Numerical values supplied by G.Wormser.

Z = 0.0 point extrapolated using LUND fragmentation model.

Z = 0.0 point extrapolated using LUND fragmentation model.

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LAMBDA (1520) PRODUCTION IN NEUTRON - NUCLEON INTERACTIONS AT approximately 40-GeV NEUTRON ENERGY

Krastev, V.R. ; Aleev, A.N. ; Arefev, V.A. ; et al.
JINR-P1-88-31, 1988.
Inspire Record 261871 DOI 10.17182/hepdata.9450

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6 data tables

AVERAGE OVER ALL TARGETS.

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DIFFRACTIVE DISSOCIATION OF NEUTRONS IN LAMBDA0 K0 ON HYDROGEN AT ABOUT 40-GeV ENERGY

The BIS-2 collaboration Aleev, A.N. ; Arefev, V.A. ; Balandin, V.P. ; et al.
JINR-P1-88-51, 1988.
Inspire Record 261900 DOI 10.17182/hepdata.38806

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4 data tables

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ESTIMATING THE RESONANT PARAMETERS OF A DELTA (33) ISOBAR BASED ON DATA ABOUT PHOTOPRODUCTION OF PI0 MESONS IN A C-12 NUCLEUS

Belousov, A.S. ; Vazdik, Ya.A. ; Malinovsky, E.I. ; et al.
Bull.Lebedev Phys.Inst. 7 (1988) 27-30, 1988.
Inspire Record 271246 DOI 10.17182/hepdata.38326

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1 data table

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THE STUDY OF INCLUSIVE CHARACTERISTICS OF anti-d d INTERACTIONS AT 12-GeV/c

Batyunya, B.V. ; Boguslavsky, I.V. ; Bruncko, D. ; et al.
JINR-P1-87-849, 1987.
Inspire Record 253758 DOI 10.17182/hepdata.9416

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8 data tables

THE BETTER FIT FOR PI- AND BARIONBAR IS THE SUM OF TWO EXPONENT: A*EXP(-B1*PT**2)+D*EXP(-B2*PT**2).FOR PI- B1=30+-4 AND B2=6.3+-.3 .FOR BARIONBAR B1=46+-18 AND B2=3.9+-.5.

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THE STUDY OF THE NEUTRON STRANGE PARTICLES AND gamma QUANTUM PRODUCTION IN anti-d d INTERACTIONS AT 12-GeV/c

Batyunya, B.V. ; Boguslavsky, I.V. ; Bruncko, D. ; et al.
JINR-P1-87-802, 1987.
Inspire Record 253863 DOI 10.17182/hepdata.9417

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9 data tables

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THE STUDY OF anti-n n INTERACTIONS AT 6.1-GeV/c

The Dubna-Bucharest-Yerevan-Kosice-Moscow-Prague-Sofiya collaboration Batyunya, B.V. ; Boguslavsky, I.V. ; Bruncko, D. ; et al.
Sov.J.Nucl.Phys. 48 (1988) 475, 1988.
Inspire Record 253864 DOI 10.17182/hepdata.9420

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21 data tables

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Determination of $\alpha^- s$ From Energy-energy Correlations in $e^+ e^-$ Annihilation at 29-{GeV}

Wood, D.R. ; Petersen, A. ; Abrams, G.S. ; et al.
Phys.Rev.D 37 (1988) 3091, 1988.
Inspire Record 250899 DOI 10.17182/hepdata.23323

We have studied the energy-energy correlation in e+e− annihilation into hadrons at √s =29 GeV using the Mark II detector at the SLAC storage ring PEP. We find to O(αs2) that αs=0.158±0.003±0.008 if hadronization is described by string fragmentation. Independent fragmentation schemes give αs=0.10–0.14, and give poor agreement with the data. A leading-log shower fragmentation model is found to describe the data well.

6 data tables

Correlation data from the original PEP-5 detector.

Correlation Asymmetry data from the original PEP-5 detector.

Correlation data from the upgraded detector.

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Observation of $\Omega^-$ Production in $e^+ e^-$ Annihilation at 29-{GeV}

Klein, S. ; Himel, T. ; Abrams, G.S. ; et al.
Phys.Rev.Lett. 59 (1987) 2412, 1987.
Inspire Record 247900 DOI 10.17182/hepdata.20175

Inclusive Ω− production in e+e− annihilation at 29 GeV has been measured with the Mark II detector. From an integrated luminosity of 207 pb−1, we determine a production rate of 0.014±0.006±0.004 Ω−, Ω¯+ per hadronic event. This is roughly 35 times the Lund-model prediction of 0.0004 Ω−, Ω¯+ per hadronic event, but comparable to the Webber-model prediction of 0.006 Ω−, Ω¯+ per hadronic event. The large rate of Ω− production, compared with production rates for other baryons, and with theoretical predictions based on diquark models, indicates that spin suppression does not hold for Ω− production.

2 data tables

Radiatively corrected inclusive cross section.

Extrapolation to full momentum range.