排序方式: 共有9条查询结果,搜索用时 15 毫秒
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Bockhorst M. Burbach G. Burgwinkel R. Empt J. Guse B. Guse B. Haas K. -M. Hannappel J. Heinloth K. Hey T. Hoffmann-Rothe P. Honscheid K. Jahnen T. Jakob H. P. Jöpen N. Jüngst H. Kirch U. Klein F. -J. Kostrewa D. Lindemann L. Link J. Manns J. Menze D. Merkel H. Merkel R. Neuerburg W. Paul E. Plötzke R. Schenk U. Schmidt S. Scholmann J. Schütz P. Schultz-Coulon H. -C. Schweitzer M. Schwille W. J. Tran M. -Q. Umlauf G. Vogl W. Wedemeyer R. Wehnes F. Wißkirchen J. Wolf A. 《Zeitschrift fur Physik C Particles and Fields》1994,63(1):37-47
The reactions pK
+ and pK
+ 0 have been measured with the multiparticle detector system SAPHIR at ELSA in Bonn. Besides the differential cross sections the polarization and, for the first time, the 0 polarization have been determined in a photon induced reaction. All data are presented as functions of the photon energy (from threshold up to 1.47 GeV) and of the kaon production angle (0°–180°). The polarization of both and 0 is substantial at all energies and varies strongly with the production angle.This work is supported by the Bundesminister für Forschung und Technologie (BMFT), FK 06 BN 621 I 相似文献
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H. Blume R. Färber N. Feldmann K. Heinloth D. Kramarczyk F. Kuckelkorn H. J. Michels J. Päsler J. P. Dowd 《Zeitschrift fur Physik C Particles and Fields》1983,16(4):283-289
The electroproduction of π0-mesons on protons has been measured with electrons of 1.7 and 2.1 GeV energy in the region of the nucleon resonances at \(W = \sqrt {(q + p)^2 } = 1,400 - 2,000MeV\) at rather low values of |q 2|=|(e?e′)2|=0.01–0.1 GeV2 but at high values of the nucleon recoil |t|=|(p?p′)2|≈0.6–2.2 GeV2 corresponding to \(\Theta _\pi ^{cm} \approx 145^ \circ - 180^ \circ\) . Up toW≈1,650 MeV the cross section for π0-production with virtual photons of |q 2|≈0.03 GeV2 is only slightly smaller than that with real photons. ForW?1,700 MeV the cross section at |q 2|≈0.03 GeV2 is on average a factor of 2 smaller than that atq 2=0 but only slightly higher than that at |q 2|≈0.3–1 GeV2. 相似文献
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Jochen Heinloth 《Mathematische Annalen》2010,347(3):499-528
We show some of the conjectures of Pappas and Rapoport concerning the moduli stack BunG{{\rm Bun}_\mathcal {G}} of G{\mathcal {G}}-torsors on a curve C, where G{\mathcal {G}} is a semisimple Bruhat-Tits group scheme on C. In particular we prove the analog of the uniformization theorem of Drinfeld-Simpson in this setting. Furthermore we apply
this to compute the connected components of these moduli stacks and to calculate the Picard group of BunG{{\rm Bun}_\mathcal {G}} in case G{\mathcal {G}} is simply connected. 相似文献
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Jochen Heinloth 《Comptes Rendus Mathematique》2005,341(10):623-626
Using the language of stacks one can give a simple definition of functorial Chern classes for twisted sheaves. Calculating the cohomology ring of a -gerbe we observe that the twisted Chern classes used by Huybrechts and Stellari are specializations of these classes. We describe explicitly the relation between the choice of a cocycle in the definition of twisted sheaves and the 2-categorical structure of -gerbes. To cite this article: J. Heinloth, C. R. Acad. Sci. Paris, Ser. I 341 (2005). 相似文献
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Derrick M Krakauer D Magill S Mikunas D Musgrave B Repond J Stanek R Talaga RL Zhang H Ayad R Bari G Basile M Bellagamba L Boscherini D Bruni A Bruni G Bruni P Cara Romeo G Castellini G Chiarini M Cifarelli L Cindolo F Contin A Corradi M Gialas I Giusti P Iacobucci G Laurenti G Levi G Margotti A Massam T Nania R Nemoz C Palmonari F Polini A Sartorelli G Timellini R Zamora Garcia Y Zichichi A Bargende A Crittenden J Desch K Diekmann B Doeker T Eckert M Feld L Frey A Geerts M Geitz G Grothe M 《Physical review letters》1995,75(6):1006-1011
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