独家rho-0电生中螺旋度振幅的比值
高能物理 - 实验
2011-05-03 v2
摘要
在HERMES实验中，使用27.6 GeV纵向极化电子/正电子束以及非极化氢和氘靶，在运动学区域0.5 GeV^2 < Q^2 < 7.0 GeV^2、3.0 GeV < W < 6.3 GeV和-t' < 0.4 GeV^2内研究了独家rho^0介子电生。从数据中提取了自然宇称交换螺旋度振幅T_{11} (\gamma^*_T --> \rho_T)、T_{01} (\gamma^*_T --> \rho_L)、T_{10} (\gamma^*_L --> \rho_T)和T_{1-1} (\gamma^*_{-T} -->\rho_T)与T_{00} (\gamma^*_L --> \rho_L)之比的实部和虚部。对于非自然宇称交换振幅U_{11}，获得了比值|U_{11}/T_{00}|。给出了这些比值对Q^2和t'的依赖性，并与微扰QCD预言进行了比较。
引用
@article{arxiv.1012.3676,
title = {Ratios of Helicity Amplitudes for Exclusive rho-0 Electroproduction},
author = {The HERMES Collaboration and A. Airapetian and N. Akopov and Z. Akopov and E. C. Aschenauer and W. Augustyniak and R. Avakian and A. Avetissian and E. Avetisyan and S. Belostotski and N. Bianchi and H. P. Blok and A. Borissov and J. Bowles and V. Bryzgalov and J. Burns and M. Capiluppi and G. P. Capitani and E. Cisbani and G. Ciullo and M. Contalbrigo and P. F. Dalpiaz and W. Deconinck and R. De Leo and L. De Nardo and E. De Sanctis and M. Diefenthaler and P. Di Nezza and M. Dueren and M. Ehrenfried and G. Elbakian and F. Ellinghaus and R. Fabbri and A. Fantoni and L. Felawka and S. Frullani and D. Gabbert and G. Gapienko and V. Gapienko and F. Garibaldi and G. Gavrilov and V. Gharibyan and F. Giordano and S. Gliske and M. Golembiovskaya and C. Hadjidakis and M. Hartig and D. Hasch and G. Hill and A. Hillenbrand and M. Hoek and Y. Holler and I. Hristova and Y. Imazu and A. Ivanilov and H. E. Jackson and H. S. Jo and S. Joosten and R. Kaiser and G. Karyan and T. Keri and E. Kinney and A. Kisselev and N. Kobayashi and V. Korotkov and V. Kozlov and P. Kravchenko and V. G. Krivokhijine and L. Lagamba and R. Lamb and L. Lapikas and I. Lehmann and P. Lenisa and L. A. Linden-Levy and A. Lopez Ruiz and W. Lorenzon and X. -G. Lu and X. -R. Lu and B. -Q. Ma and D. Mahon and N. C. R. Makins and S. I. Manaenkov and L. Manfre and Y. Mao and B. Marianski and A. Martinez de la Ossa and H. Marukyan and C. A. Miller and Y. Miyachi and A. Movsisyan and V. Muccifora and M. Murray and A. Mussgiller and E. Nappi and Y. Naryshkin and A. Nass and M. Negodaev and W. -D. Nowak and L. L. Pappalardo and R. Perez-Benito and N. Pickert and P. E. Reimer and A. R. Reolon and C. Riedl and K. Rith and G. Rosner and A. Rostomyan and J. Rubin and D. Ryckbosch and Y. Salomatin and F. Sanftl and A. Schaefer and G. Schnell and K. P. Schueler and B. Seitz and T. -A. Shibata and V. Shutov and M. Stancari and M. Statera and E. Steffens and J. J. M. Steijger and F. Stinzing and S. Taroian and A. Terkulov and A. Trzcinski and M. Tytgat and A. Vandenbroucke and Y. Van Haarlem and C. Van Hulse and D. Veretennikov and V. Vikhrov and I. Vilardi and S. Wang and S. Yaschenko and S. Yen and W. Yu and B. Zihlmann and P. Zupranski},
journal= {arXiv preprint arXiv:1012.3676},
year = {2011}
}
备注
27 pages, 8 tables, 13 figures; minor textual changes on pages 2, 3,9, 10, 11, and some changes to the list of references