کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10720678 1031273 2012 31 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Higher level string resonances in four dimensions
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
Higher level string resonances in four dimensions
چکیده انگلیسی
We study higher level Regge resonances of open superstrings, focusing on the universal part of the Neveu-Schwarz sector common to all D-brane realizations of the standard model. For Regge states with masses far above the fundamental string scale, we discuss the spin-dependence of their decay rates into massless gauge bosons. Extending our previous work on lowest level string excitations, we study the second mass level at which spins range from 0 to 3. We construct the respective vertex operators and compute the amplitudes involving one massive particle and two or three gauge bosons. To illustrate the use of Britto-Cachazo-Feng-Witten (BCFW) recursion relations in superstring theory, we build the four-gluon amplitude from on-shell amplitudes involving string resonances and gauge bosons.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Volume 856, Issue 2, 11 March 2012, Pages 247-277
نویسندگان
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