کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10726289 | 1035832 | 2012 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
η meson production in deuteron-proton collisions at COSY-ANKE
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: η meson production in deuteron-proton collisions at COSY-ANKE η meson production in deuteron-proton collisions at COSY-ANKE](/preview/png/10726289.png)
چکیده انگلیسی
The ANKE spectrometer (Apparatus for studies of Nucleon and Kaon Ejectiles) situated at the COSY of the Froschungszentrum Jülich is well suited to investigate η meson production in deuteron-proton collisions, especially close to threshold. By studying the reaction dpâ3Heη, differential and total cross sections as well as the η meson mass have been determined with high accuracy. The very rapid rise of the total cross section to its maximum value within the first 0.5 MeV above the threshold implies a very large 3Heη scattering length, i.e., a very strong 3Heη final state interaction, and might indicate the presence of a quasi-bound state extremely close to threshold. In order to clarify the unambiguous η meson mass situation, a new measurement investigating the dpâ3Heη reaction at 12 fixed energies at COSY-ANKE was conducted. Using this two-body reaction, the η meson mass can be extracted from pure kinematics through the determination of the production threshold. This requires to measure the 3Heη final state momenta pf and the associated beam momenta pd with highest precision.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Particle and Nuclear Physics - Volume 67, Issue 2, April 2012, Pages 370-374
Journal: Progress in Particle and Nuclear Physics - Volume 67, Issue 2, April 2012, Pages 370-374
نویسندگان
P. Goslawski, I. Burmeister, M. Mielke, M. Papenbrock, D. Schröer, A. Täschner, A. Khoukaz,