排序方式: 共有8条查询结果,搜索用时 15 毫秒
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Kochocki JA Allison WW Alner GJ Ambats I Ayres DS Balka LJ Barr GD Barrett WL Benjamin D Border P Brooks CB Cobb JH Cockerill DJ Coover K Courant H Dahlin B DasGupta U Dawson JW Edwards VW Fields TH Kirby-Gallagher LM Garcia-Garcia C Giles RH Goodman MC Heller K Heppelman S Hill N Hoftiezer JH Jankowski DJ Johns K Joyce T Kafka T Litchfield PJ Lopez FV Lowe M Mann WA Marshak ML May EN McMaster L Milburn RH Miller W Napier A Oliver WP Pearce GF Perkins DH Peterson EA Price LE Roback D Rosen DB 《Physical review D: Particles and fields》1990,42(9):2967-2973
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Michael DG Adamson P Alexopoulos T Allison WW Alner GJ Anderson K Andreopoulos C Andrews M Andrews R Arms KE Armstrong R Arroyo C Auty DJ Avvakumov S Ayres DS Baller B Barish B Barker MA Barnes PD Barr G Barrett WL Beall E Becker BR Belias A Bergfeld T Bernstein RH Bhattacharya D Bishai M Blake A Bocean V Bock B Bock GJ Boehm J Boehnlein DJ Bogert D Border PM Bower C Boyd S Buckley-Geer E Bungau C Byon-Wagner A Cabrera A Chapman JD Chase TR Cherdack D Chernichenko SK Childress S Choudhary BC 《Physical review letters》2006,97(19):191801
This Letter reports results from the MINOS experiment based on its initial exposure to neutrinos from the Fermilab NuMI beam. The rates and energy spectra of charged current nu(mu) interactions are compared in two detectors located along the beam axis at distances of 1 and 735 km. With 1.27 x 10(20) 120 GeV protons incident on the NuMI target, 215 events with energies below 30 GeV are observed at the Far Detector, compared to an expectation of 336+/-14 events. The data are consistent with nu(mu) disappearance via oscillations with |Delta(m)2/32|=2.74 +0.44/-0.26 x10(-3)eV(2) and sin(2)(2theta(23))>0.87 (68% C.L.). 相似文献
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G.J. Alner K. Alpgård R.E. Ansorge B. Åsman K. Böckmann C.N. Booth L. Burow P. Carlson J.-L. Chevalley C. DeClercq R.S. DeWolf B. Eckart G. Ekspong I. Evangelou A. Eyring J.-P. Fabre K.A. French N. Yamdagni 《Physics letters. [Part B]》1984,138(4):304-310
New data are presented on the charged multiplicity distribution for non single-diffractive events produced in pp? interactions at a CM energy . The distribution in the full pseudorapidity range is compared with data from the ISR. Using the scaling variable a change of shape is observed. The effect is manifested as an increase from 2% to 6% in the proportion of high multiplicity (z > 2) events. For the central pseudorapidity range, |η| ? 1.5, scaling is approximately valid up to . 相似文献
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Longley NP Bode CR Border PM Courant H DeMuth DM Gray RN Johns K Kasahara SM Lowe MJ Marshak ML Miller WH Mualem L Peterson EA Roback DM Ruddick K Schmid DJ Schub MH Shupe MA Vassiliev V Villaume G Werkema SJ Ayres DS Fields TH Gallagher HM Goodman MC Lopez FV May EN Price LE Seidlein RV Thron JL Trost H Uretsky JL Allison WW Barr GD Brooks CB Cobb JH Giller GL Stassinakis A Thomson MA West N Wielgosz U Alner GJ Cockerill DJ Cotton RJ Garcia-Garcia C Litchfield PJ Pearce GF Ewen B Kafka T 《Physical review D: Particles and fields》1995,52(5):2760-2765
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G. J. Alner R. E. Ansorge B. ?sman C. N. Booth L. Burow P. Carlson C. DeClercq R. S. DeWolf A. Drees B. Eckart G. Ekspong I. Evangelou A. Eyring J. -P. Fabre L. Fr?bel C. Fuglesang J. Gaudaen C. Geich-Gimbel B. Holl G. von Holtey R. Hospes K. Jon-And Th. Kokott F. Lotse N. Manthos R. Meinke D. J. Munday J. E. V. Ovens W. Pelzer J. J. Reidy J. G. Rushbrooke H. Schmickler F. Triantis L. Van hamme Ch. Walck C. P. Ward D. R. Ward C. J. S. Webber T. O. White G. Wilquet N. Yamdagni UA Collaboration 《Zeitschrift fur Physik C Particles and Fields》1986,32(2):153-161
Data on antiproton-proton cross sections at the c.m. energies 200 and 900 GeV are presented. The data were obtained at the CERN antiproton-proton Collider operated in a new pulsed mode in which the same beams were accelerated and decelerated between beam energies of 450 and 100 GeV. The properties of the machine determine the ratio of the luminosities at the two energies to about 1% and thus an accurate measurement of the ratioR of the inelastic cross sections could be made. We findR (=σ 900/σ 200)=1.20±0.01±0.02, where the first error is statistical and the second systematic. Interpolating existing data to estimateσ ine1(200 GeV) this measurement ofR leads toσ ine1(900 GeV)=50.3+0.4+1.0 mb. Using an extrapolated value ofσ e1/σ tot we estimate the total cross section at 900 GeV to be 65.3±0.7±1.5 mb. Both the inelastic and total cross sections are compatible with a ln2 s dependence. Comparisons are made with different fits to the total cross section energy dependence. 相似文献
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Thron JL Allison WW Alner GJ Ambats I Ayres DS Balka LJ Barr GD Barrett WL Benjamin D Border PM Brooks CB Cobb JH Cockerill DJ Courant H Dawson JW Demuth DM Edwards VW Ewen B Fields TH Garcia-Garcia C Giles RH Giller GL Goodman MC Gray RN Heilig SJ Hill N Hoftiezer JH Jankowski DJ Johns K Kafka T Kasahara SM Kochocki J Leeson W Litchfield PJ Longley NP Lopez FV Lowe MJ Mann WA Marshak ML May EN Maxam D McMaster L Milburn RH Miller WH Minor CP Napier A Oliver WP Pearce GF Perkins DH Peterson EA 《Physical review D: Particles and fields》1992,46(11):4846-4851
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G. J. Alner R. E. Ansorge B. ?sman C. N. Booth L. Burow P. Carlson R. S. DeWolf A. Drees B. Eckart G. Ekspong I. Evangelou A. Eyring J. -P. Fabre C. Fuglesang J. Gaudaen C. Geich-Gimbel B. Holl R. Hospes D. P. Johnson K. Jon-And F. Lotse N. Manthos R. Meinke D. J. Munday J. E. V. Ovens W. Pelzer J. J. Reidy J. C. Rushbrooke H. Schmickler F. Triantis L. Van hamme C. Walck C. P. Ward D. R. Ward C. J. S. Webber T. O. White G. Wilquet N. Yamdagni UA Collaboration 《Zeitschrift fur Physik C Particles and Fields》1986,33(1):1-6
New data are presented on charged particle pseudorapidity distributions for inelastic events produced at c.m. energies \(\sqrt s \) =200 and 900 GeV. The data were obtained at the CERN antiproton-proton Collider operated in a new pulsed mode. The rise of the central density ρ(0) at energies up to \(\sqrt s \) =900 GeV has been studied. A new form of central region scaling is found involving the densityρ n (0) for charged multiplicityn, namely that the scaled central densityρ n (0)/ρ(0) expressed as a function ofz=n/〈n〉 is independent ofs. Scaling in the fragmentation region holds to 10–20%, and the small amount of scalebreaking observed here could be accommodated within the framework suggested by Wdowcyk and Wolfendale to account for both accelerator and cosmic ray data. 相似文献
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T. J. Sumner J. J. Quenby A. Bewick N. J. T. Smith W. G. Jones T. Ali B. Ahmed D. Davidge G. J. Davies A. Howard M. K. Joshi P. F. Smith G. J. Homer G. T. J. Arnison J. D. Lewin G. J. Alner N. J. Spooner L. Thompson P. Sellin S. Walker J. Roberts C. Peak J. C. Barton 《Nuclear Physics B - Proceedings Supplements》1999,70(1-3)
The UK Dark Matter Collaboration has run a 5–6 kg NaI detector in a well-shielded underground environment for about a year. Signatures of Cold Dark Matter (CDM) interactions are sought using pulse shape discrimination techniques by searching for the relatively short scintillation pulses arising from nuclear recoils among the residual, longer, background events from residual radioactivity in the detector and its environment. Here we report on an improvement to the limits on the CDM cross section for spin dependent interactions using our latest data from a crystal with improved detection efficiency and taking into account recent improved estimates of the spin factor correction between the nucleus and nucleon-supersymmetric particle cross sections. 相似文献
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