کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1850998 1528815 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Scaling ansatz with texture zeros in linear seesaw
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Scaling ansatz with texture zeros in linear seesaw
چکیده انگلیسی

We investigate scaling ansatz with texture zeros within the framework of linear seesaw mechanism. In this variant of seesaw mechanism a simplified expression of effective neutrino mass matrix mνmν containing two Dirac type matrices (mDmD and mDSmDS) and one Majorana type matrix (mRSmRS) is obtained by virtue of neglecting the global U(1)LU(1)L symmetry breaking term in the mass term of the Lagrangian. Along with the charged lepton mass matrix, the matrix mRSmRS, too, is chosen in a diagonal basis whereas a scaling relation is incorporated in mDmD and mDSmDS with different scale factors. Our goal in this work is to achieve a completely phenomenologically acceptable mνmν generated by combinations of mDmD and mDSmDS containing least number of independent parameters or maximum number of zeros. At the end of the numerical analysis it is found that number of zeros in any of the constituent Dirac type matrices (mDmD and mDSmDS) of mνmν cannot be greater than six in order to meet the phenomenological requirements. The hierarchy obtained here is normal and also the values of the two parameters sum mass (∑mi∑mi) and |mνee||mνee| are below the present experimental lower limit.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 741, 4 February 2015, Pages 210–216
نویسندگان
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