نوع مقاله : مقاله پژوهشی

نویسنده

دانشکده علوم، دانشگاه رازی، کرمانشاه

چکیده

واپاشی‌های انحصاری بوزون هیگز به مزون‌های  و   از طریق رویکرد ترکش مورد مطالعه قرار می‌گیرد. یکی از مدهای غالب واپاشی بوزن هیگز مدل استاندارد، واپاشی آن به جفت   است که متعاقباً به طور مستقیم به مزون‌های  و   ترکش می‌کنند. در این مقاله، نسبت واپاشی و پهنای واپاشی بوزون هیگز مدل استاندارد به مزون‌های  و   به طریق ترکش مستقیم پاد کوارک   در چارچوب نظریۀ اختلال مکانیک کوانتومی رنگ (pQCD) در مرتبۀ LO محاسبه شده است. نتایج حاصل از این محاسبات توافق بسیار خوبی با نتایج به دست آمده توسط سایر نویسندگان دارد. 

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Direct decay of the Higgs boson into B_c and B_c^* mesons

نویسنده [English]

  • Tawfigh Owsati

Faculty of Science, Razi University, Kermanshah, Iran

چکیده [English]

The exclusive decays of the Higgs boson into  and  mesons are being studied using the fragmentation approach. One of the dominant modes of the Higgs boson decay in the Standard Model is its decay into  pairs, which then directly decay into   and  mesons. In this article, the branching ratio and decay widths of the SM Higgs boson to the  and  mesons have been calculated by directly fragmenting the anti-quark  within the framework of perturbative Quantum Chromodynamics (pQCD) at leading order (LO). The results of these calculations are in very good agreement with those obtained by other authors.

کلیدواژه‌ها [English]

  • Higgs boson
  • branching fraction
  • decay widths
  • fragmentation
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