Rhines, D.
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201 GeV/c Proton Proton Elastic Scattering at Large Momentum Transfer

Hartmann, J.L. ; Orear, J. ; Vrieslander, J. ; et al.
Phys.Rev.Lett. 39 (1977) 975, 1977.
Inspire Record 120624 DOI 10.17182/hepdata.20930

Proton-proton elastic scattering has been measured in the region 4.9<|t|<12.1 GeV2 at a beam momentum of 201 GeV/c. If the form exp(At) is fitted to the data, the exponent A gradually changes from 1.5 to 0.9 GeV−2 over our t range. The data are consistent with the form exp(−6.6p⊥). A comparison with intersecting storage ring results shows that in this kinematical region the slopes are about the same, but dσdt at fixed t is still dropping with energy.

2 data tables
Table 1

7904 ELASTIC EVENTS.

Table 2

1030 ELASTIC EVENTS.


Meson Resonance Production in pi+ p Interactions at 15-GeV/c

Baltay, C. ; Cautis, C.V. ; Cohen, Daniel H. ; et al.
Phys.Rev.D 17 (1978) 62, 1978.
Inspire Record 5627 DOI 10.17182/hepdata.24406

We report on a study of 15-GeV/c π+p interactions of all topologies using the SLAC 82-in. hydrogen bubble chamber. A description is given of the automatic pattern-recognition techniques used to measure the events. Cross sections are given for meson-resonance production in all topologies. Evidence is presented for a new resonance decaying to five pions. A measurement is made of the branching ratios of the g meson. A study is made of low-mass enhancements in the diffractively produced ρπ, fπ, and gπ channels, and a search is made for nondiffractive production of the A1 meson.

4 data tables
Table 1

TOPOLOGICAL CROSS SECTIONS.

Table 2

FITTED EVENTS CROSS SECTIONS.

Table 3

RESONANCE PRODUCTION CROSS SECTIONS.

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anti-p p Interactions at 2.32-GeV/c

Chen, C.K. ; Fields, T. ; Rhines, D.S. ; et al.
Phys.Rev.D 17 (1978) 42, 1978.
Inspire Record 5667 DOI 10.17182/hepdata.24405

A bubble-chamber experiment based on 304 000 events of p¯p interactions at 2.32 GeV/c is described. The film was automatically scanned and measured by the POLLY II system. Details of the data-analysis methods are given. We report results on cross sections for constrained final states, tests of C invariance, and inclusive pion and ρ0 multiplicity parameters for annihilation final states.

2 data tables
Table 1

Axis error includes +- 4/4 contribution.

Table 2

Axis error includes +- 4/4 contribution.


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
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
Table 1

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


Inclusive Delta++ (1232) Production in pi+ p, pi- p and K- p Interactions at 16-GeV/c

The Aachen-Berlin-Bonn-CERN-Cracow-Heidelberg-London-Vienna-Warsaw collaboration Bartke, J. ; Deutschmann, M. ; Kirk, H.G. ; et al.
Nucl.Phys.B 137 (1978) 189, 1978.
Inspire Record 5621 DOI 10.17182/hepdata.51524

None

9 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Normalized Small Y Cross-Sections for Neutrinos and anti-neutrinos at High-Energy

Barish, B.C. ; Bartlett, J.F. ; Bodek, A ; et al.
Phys.Rev.Lett. 39 (1977) 741, 1977.
Inspire Record 5717 DOI 10.17182/hepdata.50114

We present results on flux-normalized neutrino and antineutrino cross sections near y=0 from data obtained in the Fermilab narrow-band beam. We conclude that values of σ0=dσdy|y=0 are consistent with rising linearly with energy over the range 45<~Eν<~20.5 GeV. The separate averages of ν and ν¯, each measured to 4%, are equal to well within the errors. The best fit for the combined data gives σ0E=(0.719±0.035)×10−38 cm2/GeV at an average Eν of 100 GeV.

2 data tables
Table 1

FE nucleus. The SIG/Enu is fitted to CONST(N=SIG)+CONST(N=T)*E.

Table 2

FE nucleus. Averaged over the energies and beams.


D Meson Production and Decay in e+ e- Annihilation at 4.03-GeV and 4.41-GeV Center-Of-Mass Energy

Piccolo, M. ; Peruzzi, I. ; Luth, V. ; et al.
Phys.Lett.B 70 (1977) 260-264, 1977.
Inspire Record 120147 DOI 10.17182/hepdata.27527

Decay modes of the charmed mesons, D 0 and D + , are studied in e + e − annihilation data at 4.03 and 4.41 GeV c.m. energy. The products of cross section times branching ratio are measured for the K − π + , K − π + π + π − , K S π + π − and K − π + π + final states. Upper limits are established for the Cabibbo forbidden decays via π + π − , K + K − , K + K − π + , K + π + π − and π + π − π + . The K − π + π + π − final state is shown to be dominated by K − π + ρ 0 .

1 data table
Table 1

THESE PARTIAL CROSS SECTIONS ARE CONVERTED TO TOTAL D INCLUSIVE CROSS SECTIONS USING KNOWN BRANCHING RATIOS AND TABULATED IN M. PICCOLO ET AL., PL 86B, 220 (1979).


Backward rho- Production in the Reaction pi- p --> p pi- pi0 at 9-GeV/c and 12-GeV/c

Benkheiri, P. ; Eisenstein, Bob I. ; Fleury, P. ; et al.
Lett.Nuovo Cim. 20 (1977) 297, 1977.
Inspire Record 5542 DOI 10.17182/hepdata.37385

None

1 data table
Table 1

SIG(C=BACKWARD) = SIG(-UP<1 GEV**2)/(1-EXP(-SLOPE)). UP DISTRIBUTION OF EVENTS HAS A PERFECT EXPONENTIAL SHAPE.


Electroproduction of Single Pions at Low Epsilon and a Measurement of the Pion Form-Factor Up to Q**2 = 10-GeV**2

Bebek, C.J. ; Brown, C.N. ; Holmes, Stephen D. ; et al.
Phys.Rev.D 17 (1978) 1693, 1978.
Inspire Record 120118 DOI 10.17182/hepdata.4472

We report measurements of the electroproduction of single charged pions from hydrogen and deuterium targets for values of ε in the range 0.35<ε<0.45. Data were taken with a hydrogen target at the (W, Q2) points (2.15 GeV, 1.2 GeV2), (2.65, 2.0), (2.65, 3.4), (2.65, 6.0), and (2.65, 10.0). Data were taken with a deuterium target at the (W, Q2) points (2.15, 1.2) and (2.65, 2.0). The transverse cross section obtained by using these data in conjunction with earlier data at high ε to separate the longitudinal and transverse components is used in conjunction with the new data and the t-channel Born term to determine the pion form factor and to re-evaluate previously reported measurements. In the range 0.15 GeV2<Q2<10.0 GeV2 the pion form factor can be described by the simple pole form [1+Q2(0.462±0.024)]−1.

46 data tables
Table 1

SEPARATED TRANSVERSE AND LONGITUDINAL VIRTUAL-PHOTON CROSS SECTIONS PREVIOUSLY PUBLISHED IN C. J. BEBEK ET AL., PRL 37, 1326 (1976).

Table 2

DATA POINT 1 (HYDROGEN TARGET).

Table 3

DATA POINT 1 (HYDROGEN TARGET).

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