Andreev, V.
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$D^{*\pm}$ Production in Jets at the {CERN} {SPS} Collider

The UA1 collaboration Arnison, G. ; Allkofer, O.C. ; Astbury, A. ; et al.
Phys.Lett.B 147 (1984) 222-226, 1984.
Inspire Record 203147 DOI 10.17182/hepdata.30497

We report evidence for the production of the charged D ∗ mesons in pp̄ collisions at s = 540 GeV . The search was confined to the charged particle fragments of hadronic jets, which are expected to be predominantly gluon jets in this experiment. The fragmentation function and production rate for D ∗ in jets of average transverse momentum of 28 GeV/ c are given.

1 data table
Table 1

THE D*'S ARE CONSIDERED AS ARISING ONLY FROM FRAGMENTATION OF HADRONIC JETS ('GLUON' JETS). HERE THE <PT> OF THE JET IS AROUND 28 GEV THE DEFINITION OF Z IS P(D*).P(JET)/(P(JET))**2.


The $\rho^\prime$ (1600) in the Reaction $\gamma p \to \pi^+ \pi^- \pi^0 \pi^0 p$ at Photon Energies of 20-{GeV} to 70-{GeV}

The Omega Photon collaboration Atkinson, M. ; Axon, T.J. ; Barberis, D. ; et al.
Z.Phys.C 26 (1985) 499, 1985.
Inspire Record 202941 DOI 10.17182/hepdata.15774

The reactionγp→π+π−π0π0p (excludingωπ0 production) has been studied for photon energies in the range 20–70 GeV. A peak is seen in the 4π mass spectrum at ∼1.66 GeV with a width of ∼0.3 GeV which is identified with theρ′(1600). Maximum likelihood fits show that the peak is dominantly inρ±π∓π0 withB(ρ′→ρ0π0π0)/B(ρ′→ρ±π∓π0)<0.1. This indicates anI=1ρπ final-state interaction. However, no evidence is found for any resonant ρπ state such as anA1 orπ′.

2 data tables
Table 1

AFTER OMEGA EXCLUSION.

Table 2

ERROR IS DOMINANTLY SYSTEMATIC.


The $Q^2$ and Transverse Momentum Dependence of Jet Production in Photon-photon Interactions

The PLUTO collaboration Berger, Christoph ; Deuter, A. ; Genzel, H. ; et al.
Z.Phys.C 26 (1984) 191, 1984.
Inspire Record 203794 DOI 10.17182/hepdata.16196

We present an experimental study of jetproduction in photon-photon interactions for 0.1≲Q2≲120 GeV2 and jet transverse momentum,pT, up to 5 GeV/c. At alQ2, the data show a highpT, tail, characteristic of a point-like interaction. The jet production cross-section approaches the quarkparton model (QPM) expectation as either jetpT orQ2 increases. Overall, the data are well described in both total cross-section and event topology by the sum of a vector-dominance model and a point-like interaction, represented by the QPM.

1 data table
Table 1

No description provided.


Upper Limits on the Production Rate of the Decuplet Baryons $\Delta$ and $\Sigma^*$ in $e^+ e^-$ Annihilation at 34.4-{GeV}

The TASSO collaboration Althoff, M. ; Braunschweig, W. ; Kirschfink, F.J. ; et al.
Z.Phys.C 26 (1984) 181, 1984.
Inspire Record 203142 DOI 10.17182/hepdata.16197
2 data tables
Table 1

UPPER LIMITS FOR DEL(1232)++ PRODUCTION.

Table 2

UPPER LIMITS FOR SIG(1385)+- PRODUCTION.


Inclusive $K^0_S$, $\Lambda$ and $\bar{\Lambda}$ Production in 360-{GeV}/$c p p$ Interactions Using the European Hybrid Spectrometer

The EHS-RCBC & Bombay-CERN-Genoa-Innsbruck-Japan-Madrid-Mons-Rutgers-Serpukhov-Tennessee-Vienna collaborations Asai, M. ; Bailly, J.L. ; Banerjee, S. ; et al.
Z.Phys.C 27 (1985) 11, 1985.
Inspire Record 202938 DOI 10.17182/hepdata.16100

Results on cross sections, longitudinal and transverse momentum distributions forKs/0, Λ and\(\bar \Lambda \) production in 360GeV/cpp interactions are presented as obtained from EHS equipped with the Rapid Cycling Bubble Chamber (RCBC). The Λ and\(\bar \Lambda \) polarizations are measured. The cross section for the diffractive components is given using the recoil spectrum. The data are discussed with respect to charm production.

1 data table
Table 1

No description provided.


Measurement of the Proton - anti-Proton Total and Elastic Cross-Sections at the CERN SPS Collider

The UA4 collaboration Bozzo, M. ; Braccini, P.L. ; Carbonara, F. ; et al.
Phys.Lett.B 147 (1984) 392-398, 1984.
Inspire Record 203148 DOI 10.17182/hepdata.49643

The proton-antiproton total cross section was measured at the CM energy √s = 546 GeV . The result is σ tot = 61.9± 1.5 mb . The ratio of the elastic to the total cross section is σ e ℓ / σ tot = 0.215±0.005. A comparison to the lower energy data shows that the increase of the total cross section with energy is very close to a log 2 s behaviour.

2 data tables
Table 1

CROSS SECTIONS ASSUMING RHO = 0.15.

Table 2

RATIO OF ELASTIC TO TOTAL CROSS SECTION.


LOW-ENERGY ANTI-PROTON INTERACTION STUDIES AT BROOKHAVEN

Sakitt, M. ; Ashford, V. ; Sainio, M.E. ; et al.
Conf.Proc.C 840709 (1984) 205, 1984.
Inspire Record 209026 DOI 10.17182/hepdata.50261

None

3 data tables
Table 1

TYPICAL QUASIELASTIC ANGULAR DISTRIBUTION FOR NUCLEAR TARGET. OTHER DATA ARE IN ASHFORD ET AL (1985-PHYS REV C).

Table 2

ABSORPTION CROSS SECTIONS.

Table 3

No description provided.


MOMENTUM AND ANGULAR DISTRIBUTIONS OF CHARGED SECONDARIES IN 40-GeV/c pi- A INTERACTIONS WITH SINGLE PARTICLE HIGH P(T) TRIGGER

The Berlin-Budapest-Dubna-Prague-Sofiya-Tbilisi-Warsaw collaboration Adam, G. ; Bannikov, A.V. ; Bohm, J. ; et al.
JINR-E1-84-442, 1984.
Inspire Record 203314 DOI 10.17182/hepdata.9861

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 THE REACTION gamma p ---> p anti-p p AT PHOTON ENERGIES 4.7-GeV <= E (gamma) <= 6.6-GeV

Bodenkamp, J. ; Fries, D.C. ; Markou, A. ; et al.
Nucl.Phys.B 255 (1985) 717-746, 1985.
Inspire Record 15090 DOI 10.17182/hepdata.33786

An experimental investigation of the reaction γ p → p p p at photon energies 4.7 ⩽ E γ ⩽ 6.6 GeV is described. The main results are the measurement of the cross section as a function of energy, a discussion of the main dynamical features of the reaction and the observation of a narrow p p mass state at 2.024 ± 0.005 GeV with a width of 29 ± 13 MeV.

3 data tables
Table 1

OBSERVATION OF THIS CHANNEL AS A CONSISTENCY CHECK ON THE NORMALIZATION.

Table 2

No description provided.

Table 3

MEASUREMENTS OF CROSS SECTIONS OF MASS SIGNALS AT 1.94 AND 2.024 GEV, EVALUATE BY FITTING TWO BREIT WIGNERS AND CONSTANT BACKGROUND TO (AP P) MASS SPECTRUM. ERRORS ARE STATISTICAL ONLY.


anti-p He-4 REACTION CROSS-SECTION AT 610-MeV/c

Balestra, F. ; Batusov, Yu.A. ; Bendiscioli, G. ; et al.
Phys.Lett.B 149 (1984) 69-72, 1984.
Inspire Record 202450 DOI 10.17182/hepdata.30450

Antiproton helium reaction cross section has been measured at 179.6 MeV with a self shunted streamer chamber in a magnetic field. Charged prong multiplicity, branching ratios and 3 He production probability are given. Comparison with p 2 H data is performed.

2 data tables
Table 1

MULTIPLICITY AND CROSS SECTIONS FOR THE INELASTIC EVENTS IN THE AP HE INTERACTIONS.

Table 2

MULTIPLICITY AND CROSS SECTIONS FOR PIONS.