ON INVESTIGATING ENERGY DEPENDENCE OF CROSS-SECTION FOR pi- MESON ELASTIC SCATTERING ON PROTONS IN THE INTERVAL 33-GeV/c TO 55-GeV/c

Derevshchikov, A.A. ; Matulenko, Yu.A. ; Meshchanin, A.P. ; et al.
Nucl.Phys.B 80 (1974) 442-460, 1974.
Inspire Record 80729 DOI 10.17182/hepdata.32174

The π − p differential elastic scattering cross sections have been measured for eight momenta in the 33–55 GeV/ c range. The energy dependence of the slope and of the total elastic scattering cross sections has been determined experimentally. The results are compared with the known data. The experimental data are compared both with the Regge pole model and with the quasi-potential one.

9 data tables

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MEASUREMENT OF TOTAL CROSS-SECTIONS IN NEUTRINO INTERACTIONS WITH PROTON AND NUCLEI IN THE ENERGY RANGE 26-GeV - 54-GeV

Babaev, A. ; Brakhman, E. ; Galaktionov, Iouri ; et al.
Yad.Fiz. 20 (1974) 71-86, 1974.
Inspire Record 80946 DOI 10.17182/hepdata.19117

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1 data table

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Negative Pion Production in Proton Proton Interactions at 69-GeV/c

The French-Soviet collaboration Bumazhnov, V.A. ; Ermolov, P.F. ; Fenyuk, A.S. ; et al.
Phys.Lett.B 50 (1974) 283-286, 1974.
Inspire Record 89197 DOI 10.17182/hepdata.27949

Inclusive spectra of π − production for pp interactions are discussed at 69 GeV/ c both in the central and in the fragmentation region and are compared to data at lower and higher energies. The p T dependence of the invariant structure function is also analysed.

2 data tables

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pi- Meson Elastic Scattering on Proton in the Coulomb-Nuclear Interference Region for Momentum Range from 33-GeV/c Up to 60-GeV/c

Apokin, V.D. ; Vasiliev, A.N. ; Derevshchikov, A.A. ; et al.
Sov.J.Nucl.Phys. 24 (1976) 49, 1976.
Inspire Record 99591 DOI 10.17182/hepdata.35863

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10 data tables

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A Search for Longlived Neutral Heavy Leptons in 400 GeV/c Proton Interactions

Bechis, D.J. ; Chang, C.Y. ; Dombeck, T.W. ; et al.
Phys.Rev.Lett. 40 (1978) 602-604, 1978.
Inspire Record 6478 DOI 10.17182/hepdata.37888

We report a null search for neutral heavy leptons produced unaccompanied by muons in 400-GeV/c proton-nucleon collisions in a magnetized beam dump and decaying in vacuum downstream. The upper limit on σB for L0's with Feynman x≳0.2 and θlab≲10 mrad with branching ratio B into two charged particles is σB≲2.8×10−35 cm2/nucleon at the 90% confidence level for masses below 1.0 GeV/c2 and lifetimes between 10−10 and 10−8 sec.

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STUDY OF THE OMEGA MESON IN THE VEPP-2M STORAGE RING

Kurdadze, L.M. ; Pakhtusova, E.V. ; Sidorov, V.A. ; et al.
JETP Lett. 36 (1982) 274-276, 1982.
Inspire Record 185895 DOI 10.17182/hepdata.16930

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Charm $D$ Meson Production in 360-{GeV} $\pi^- p$ Interactions: Evidence for Leading Quarks

The LEBC-EHS collaboration Aguilar-Benitez, M. ; Allison, W.W.M. ; Bagnaia, P. ; et al.
Phys.Lett.B 123 (1983) 98-102, 1983.
Inspire Record 182456 DOI 10.17182/hepdata.30715

Charm D-meson production in 360 GeV π − p interactions has been studied using the high-resolution hydrogen bubble chamber LEBC and the European Hybrid Spectrometer. The data show evidence for leading quark effects both in the number of D-meson types and in the Feynman x distributions. The production cross section is of the form d 2 δ d x d p T 2 ∞(1-x) n exp (-ap T 2 ) with n = 2.8±0.8 and a = 1.1±0.3 (GeV/ c ) −2 . The x distribution is, however, compatible with the presence of both central ( n = 6) and leading (n = 1) D / D production. The fraction of D-messons in the leading component is estimated to be ≈30%. The rapidity gap between members of reconstructed charm pairs is small compared to the available rapidity range. The inclusive cross section for single D-messons in the forward direction is: δ(D/ D )=(40 8 +15 )μ b ( for x>0) .

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Neutral $D$ Meson Properties in 360-{GeV}/$c \pi^- p$ Interactions

The LEBC-EHS collaboration Aguilar-Benitez, M. ; Allison, W.W. ; Bagnaia, P. ; et al.
Phys.Lett.B 146 (1984) 266-272, 1984.
Inspire Record 202656 DOI 10.17182/hepdata.30495

Based on a sample of 22 four-prong D 0 / D 0 decays produced in hydrogen by 360 GeV/ c π − , we present the following new results: mean lifetime τ = (3.5 −0.9 +1.4 ) x 10 −13 s ; production cross section for x F > 0.0, σ = (10.3 ± 3.5) ωb ; the D → K ± π ± π + π − branching ratio = (7.1 ± 2.5)%.

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NEW RESULTS ON NEUTRAL D MESON PROPERTIES IN 360-GeV/c pi- p INTERACTIONS

Aguilar-Benitez, M. ; Allison, W.W. ; Barr, V.M. ; et al.
IFVE-85-21, 1985.
Inspire Record 223942 DOI 10.17182/hepdata.40961

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$D \bar{D}$ Correlations in 360-{GeV}/$c \pi^- p$ Interactions

The NA27 & LEBC-EHS collaborations Aguilar-Benitez, M. ; Allison, W.W. ; Baland, J.F. ; et al.
Phys.Lett.B 164 (1985) 404-409, 1985.
Inspire Record 216598 DOI 10.17182/hepdata.49642

Charm-charm correlation properties are studied in detail for the first time using a sample of D D pairs produced in 360 GeV/ c π − p interactions. The data are compared with various models of charm production.

1 data table

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