排序方式: 共有12条查询结果,搜索用时 406 毫秒
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Asai S. Azuelos G. Buttar C. Cavasinni V. Costanzo D. Cranmer K. Harper R. Jakobs K. Kanzaki J. Klute M. Mazini R. Mellado B. Quayle W. Richter-Ws E. Takemoto T. Vivarelli I. Wu Sau Lan 《The European Physical Journal C - Particles and Fields》2003,32(2):s19-s54
The European Physical Journal C - The potential for the discovery of a Standard Model Higgs boson in the mass range m H < 2 m Z in the vector boson fusion mode has been studied for the ATLAS... 相似文献
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M. Ambrosio G. Anzivino G. Barbarino G. Carboni V. Cavasinni T. Del Prete P.D. Grannis D. Lloyd Owen M. Morganti G. Paternoster S. Patricelli M. Valdata-Nappi 《Physics letters. [Part B]》1982,115(6):495-502
We measured the differential cross section for p?p and pp elastic scattering in the momentum-transfer range 0.01 <|t| < 1.0 GeV2 at the CERN Intersecting Storage Rings with center-of-mass energy . Fitting the differential cross section with an exponential [Aexp (bt)], we found for |t| < 0.05 GeV2, whilst for |t| > 0.09 GeV2, . Using the optical theorem, we obtained for the total cross section and, by integrating the differential cross section, we obtained for the total elastic cross section . Calculations of σtot combining elastic-rate and total-rate measurements are also given. All of these measurements were also performed for pp scattering at the same energy, and the results for both reactions are compared. 相似文献
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V. Cavasinni T. Del Prete M. Morganti F. Schiavo M. Valdata-Nappi G. Carboni D. Lloyd Owen M. Ambrosio G. Barbarino G. Paternoster S. Patricelli G. Anzivino 《Zeitschrift fur Physik C Particles and Fields》1984,21(4):299-305
We investigated correlations between pairs of charged secondaries produced in antiproton-proton and proton-proton interactions at a centre-of-mass energy of 31 GeV using the pseudorapidity variable η=?ln (tanθ/2). Positive, short-range correlations were observed in both reactions. In the antiproton-proton case, however, there is a stronger correlation at very short range when both particles are produced in the central region and when the charged multiplicity of the event is about 30% higher than the mean. A simple Monte Carlo calculation indicates that quark-antiquark annihilation into two hadronic jets could account for the observed effect. 相似文献
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M. Ambrosio G. Anzivino G. Barbarino U. Becker G. Carboni V. Cavasinni T. Del Prete G. Kantardjian D. Lloyd Owen M. Morganti J. Paradiso G. Paternoster S. Patricelli M. Steuer M. Valdata-Nappi 《Physics letters. [Part B]》1982,113(4):347-352
We measured the elastic scattering of and of αp at . For αα, the differential cross section dσ/dt has a diffractive pattern minima at |t| = 0.10 and 0.38 GeV2. At small |t| = 0.05?0.07 GeV2, this cross section behaves like exp[(100 ± 10) t]. Extrapolating a fit to the data to the optical point, we obtained for the total cross section αtot(αα) = 250 ± 50 mb and an integrated elastic cross section σe1(αα) = 45 ± mb. Another method of estimating σtot(αα), based on measuring the interaction rate, yielded 295 ± 40 mb. For αp, dσ/dt has aminimum at |t| = 0.20 GeV2, and for 0.05 < |t| < 0.18 GeV2 behaves like exp[(41 ± 2) t]. Extrapolating this slope to |t| = 0, we found σtot(αp) = 130 ± 20 and σe1(αp) = 20 ± 4mb. Results on pp elastic scattering at agree with previous ISR experiments. 相似文献
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U. Amaldi W. Bartel G. Cocconi A.N. Diddens Z. Dimcovski R.W. Dobinson P. Duinker A.M. Thorndike A.M. Wetherell F. Mönnig G. Bellettini P.L. Braccini R. Castaldi V. Cavasinni T. Del Prete P. Laurelli G. Sanguinetti M. Valdata R. Thun 《Physics letters. [Part B]》1975,58(2):213-218
Data, obtained from p-p collisions at centre-of-mass energies between 31 and 63 GeV, are presented on inclusive and semi-inclusive correlations between forward emitted neutrons and charged particles observed in an omnidirectional hodoscope. A total absorption spectrometer was used to detect the neutrons and to measure their energy. Significant correlations are observed over the whole rapidity range. The data suggest that neutrons result from the decay of clusters emitted in the fragmentation region. 相似文献
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G. Carboni D. Lloyd Owen M. Ambrosio G. Anzivino G. Barbarino G. Paternoster S. Patricelli V. Cavasinni T. Del Prete M. Morganti M. Valdata-Nappi P.D. Grannis 《Physics letters. [Part B]》1982,113(1):87-92
We measured the total cross section for p scattering at at the CERN ISR, using the direct, total-rate method. The result obtained, , shows that, in common with σtot(pp), this cross section also starts to rise in the ISR energy range. We remeasured the total cross section for pp scattering at the same energy, obtaining σtot(pp) = 43.26 ± 0.33 mb, and found for the difference, , a value of 1.44±0.45 mb. 相似文献
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U. Amaldi G. Cocconi A.N. Diddens Z. Dimcovski R.W. Dobinson J. Dorenbosch P. Duinker G. Matthiae A.M. Thorndike A.M. Wetherell G. Bellettini P.L. Braccini R. Castaldi V. Cavasinni F. Cervelli T. Del Prete P. Laurelli M.M. Massai R. Thun 《Physics letters. [Part B]》1976,62(4):460-466
Measurements of the proton-proton total cross section have been made with increased precision (±0.6%) over the ISR energy range . Two different experimental methods gave consistent results, showing that the total cross section increases 10% over the ISR range and in addition that the absolute value of the ISR luminosity can be measured to ±0.9%. 相似文献