Bachmann, Sebastian
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Measurement of the anti-p p total cross-section at S**(1/2) = 1800-GeV

The CDF collaboration White, Sebastian N. ;
Nucl.Phys.B Proc.Suppl. 25 (1992) 19-25, 1992.
Inspire Record 320359 DOI 10.17182/hepdata.43063

The pp differential elastic scattering cross section was measured at √s = 1800 GeV, using an improved accelerator luminositydetermination and CDF small angle data in the range of 0.05 ≤ t ≤ 0.2(GeV/c)2. By extrapolating the differential cross sections to t=0 and using the optical theorem we obtain a total cross section of σtot(pp) = 72.0±3.6 mb. This result is preliminary in the sense that we expect to further reduce the systematic error on the optical point.

1 data table
Table 1

No description provided.


Inverse Muon Decay, $\nu_\mu e \to \mu^- \nu_e$, at the Fermilab Tevatron

Mishra, S.R. ; Bachmann, K.T. ; Blair, R.E. ; et al.
Phys.Lett.B 252 (1990) 170-176, 1990.
Inspire Record 296115 DOI 10.17182/hepdata.15430

We report an improved measurement of the inverse muon decay process, ν μ +e→ μ − + ν e , at the Fermilab Tevatron. The rate of this reaction with respect to the ν μ -N charged current interaction is measured to be (0.1245±0.0057(stat.)±0.0031 (sys.)) × 10 −2 . The measurement confirms the standard model predictions for the Lorentz structure of the weak current, the helicity of the neutrino, and the energy dependence of the cross section.

4 data tables
Table 1

Data from the Quadruple Triplet Neutrino beam (QTB).

Table 2

Data from the Narrow Band Beam(NBB).

Table 3

Weighted average of the QTB and NBB data.

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Jet fragmentation properties of anti-p p collisions at S**(1/2) = 1.8-TeV

The CDF collaboration Abe, F. ; Amidei, D. ; Apollinari, G. ; et al.
Phys.Rev.Lett. 65 (1990) 968-971, 1990.
Inspire Record 297585 DOI 10.17182/hepdata.19919

The charged-particle fractional momentum distribution within jets, D(z), has been measured in dijet events from 1.8-TeV p¯p collisions in the Collider Detector at Fermilab. As expected from scale breaking in quantum chromodynamics, the fragmentation function D(z) falls more steeply as dijet invariant mass increases from 60 to 200 GeV/c2. The average fraction of the jet momentum carried by charged particles is 0.65±0.02(stat)±0.08(syst).

1 data table
Table 1

No description provided.


Neutrino Production of Opposite Sign Dimuons at Tevatron Energies

Foudas, C. ; Bachmann, K.T. ; Bernstein, R.H. ; et al.
Phys.Rev.Lett. 64 (1990) 1207, 1990.
Inspire Record 26417 DOI 10.17182/hepdata.20000

We have measured the strange-quark content of the nucleon, ηs=−0.08+0.012, and the Kobayashi-Maskawa matrix element ‖Vcd‖=0.220−0.018+0.015 using a sample of 1797 νμ- and ν¯μ-induced μ−μ+ events with Pμ≥9 GeV/c and 30≤Eν≤600 GeV. The data are consistent with the slow-rescaling hypothesis of charm production in ν-N scattering and within this formalism yield a value of the charm-quark mass parameter mc=1.31−0.48+0.64 GeV/c2. .AE

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Precise Comparison of Anti-proton - Proton and Proton Proton Forward Elastic Scattering at $\sqrt{s}=24$.3-{GeV}

The UA6 collaboration Breedon, R.E. ; Chapin, T.J. ; Cool, R.L. ; et al.
Phys.Lett.B 216 (1989) 459-465, 1989.
Inspire Record 267044 DOI 10.17182/hepdata.29854

We report results from a measurement of antiproton-proton and proton-proton small-angle elastic scattering at √ s = 24.3 GeV in the range 0.001 ⩽ | t | ⩽ 0.06 (GeV/ c ) 2 . The measurement was performed at the CERN p p Collider by using silicon detectors to observe protons recoiling from a hydrogen cluster-jet target intercepting the stored p and p beams. Fits to the measured differential cross sections yield the ratio of the real to the imaginary part of the forward nuclear scattering amplitude ρ and the nuclear slope parameter b for both p p and pp. We find that the difference Δρ = ρ ( p p ) − ρ( pp ) = 0.031 ± 0.010 agrees with conventional fits and disagrees with the “odderon” fit designed to accommodate the recent UA4 measurement of ρ( p p) at 546 GeV.

3 data tables
Table 1

Data requested from authors.

Table 2

No description provided.

Table 3

Nuclear slopes fixed to world average.


Neutrino Production of Same Sign Dimuons

Schumm, B.A. ; Merritt, F.S. ; Oreglia, M.J. ; et al.
Phys.Rev.Lett. 60 (1988) 1618, 1988.
Inspire Record 23079 DOI 10.17182/hepdata.20157

In a sample of 670 000 charged-current neutrino events, 101 μ−μ− events have been observed, with 30 GeV<Eν<600 GeV and Pμ>9 GeV/c for both muons. After background subtraction, 18.5±13.9 events remain, yielding a prompt rate of (5.5±4.1)×10−5 per charged-current event. A sample of 124 000 antineutrino events yields 15 μ+μ+ events, giving 6.4±4.2 events after background subtraction and a prompt rate of (1.0±0.7)×10−4 per charged-current event. The numbers and kinematic distributions of these events are consistent with standard model sources.

1 data table
Table 1

No description provided.


Diffraction Dissociation of Photons on Hydrogen

Chapin, T.J. ; Cool, R.L. ; Goulianos, Konstantin A. ; et al.
Phys.Rev.D 31 (1985) 17-30, 1985.
Inspire Record 216071 DOI 10.17182/hepdata.4332

We report results from a measurement of the inclusive diffraction dissociation of photons on hydrogen, γp→Xp, in the range 75<pγ<148 GeV/c, 0.02<‖t‖<0.1 (GeV/c)2, and MX2/s<0.1. Our data show an exponential t dependence and a dominant 1/MX2 behavior for MX2>4 GeV2. We test the finite-mass sum rule and, by comparing γp with π−p data obtained in the same apparatus, we test factorization.

18 data tables
Table 1

EXTRACTED ELASTIC CROSS SECTIONS.

Table 2

EXTRACTED ELASTIC CROSS SECTIONS.

Table 3

RESULTS OF EXPONENTIAL FITS TO ELASTIC CROSS SECTIONS.

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Charged Multiplicities of High Mass Diffractive $\pi^\pm$, $K^\pm$, and $p^\pm$ States

Cool, R.L. ; Goulianos, Konstantin A. ; Segler, S.L. ; et al.
Phys.Rev.Lett. 48 (1982) 1451-1454, 1982.
Inspire Record 180508 DOI 10.17182/hepdata.20611

A measurement is reported of charged multiplicity distributions of high-mass diffractive π±, K±, and p± states produced in 100 and 200 GeV/c hadron-proton collisions, h+p→X+p. The distributions are described well by a Gaussian function that depends only on the available mass M=Mx−Mh, has a maximum at n0≅2M12, and a peak-to-width ratio n0D≅2.

3 data tables
Table 1

MULTIPLICITY VERSUS AVAILABLE MASS MDD-MPI.

Table 2

MULTIPLICITY VERSUS AVAILABLE MASS (MDD - MK).

Table 3

MULTIPLICITY VERSUS AVAILABLE MASS (MDD - MP).


Diffraction Dissociation of $\pi^\pm$, $K^\pm$, and $\rho^\pm$ at 100-{GeV}/c and 200-{GeV}/c

Cool, R.L. ; Goulianos, Konstantin A. ; Segler, S.L. ; et al.
Phys.Rev.Lett. 47 (1981) 701-704, 1981.
Inspire Record 171271 DOI 10.17182/hepdata.20623

We report differential cross sections for h+p→X+p (h=π±,K±,p±) at 100 and 200 GeV/c in the region 0.025<|t|<0.095 (GeV/c)2 and MX2s<0.1.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Elastic Scattering of $p^\pm$, $\pi^\pm$ and $K^\pm$ on Protons at High-energies and Small Momentum Transfer

Cool, R.L. ; Goulianos, Konstantin A. ; Segler, S.L. ; et al.
Phys.Rev.D 24 (1981) 2821, 1981.
Inspire Record 156145 DOI 10.17182/hepdata.24029

We report on a measurement of elastic differential cross sections for p±p, π±p, and K±p at 100 and 200 GeV/c in the range 0.03<|t|<0.10 (GeV/c)2. Our data display a simple exponential dependence which is consistent with other measurements in this t region or with extrapolations from higher t.

2 data tables
Table 1

No description provided.

Table 2

No description provided.