ترغب بنشر مسار تعليمي؟ اضغط هنا

The observation of the second nonet of tensor mesons with the L3 experiment

43   0   0.0 ( 0 )
 نشر من قبل Nikonov Victor A.
 تاريخ النشر 2004
  مجال البحث
والبحث باللغة English




اسأل ChatGPT حول البحث

This paper was withdrawn by arXiv administrators upon request of the Chairperson and Spokesperson of the L3 Collaboration.

قيم البحث

اقرأ أيضاً

In this article, the tensor-vector-pseudoscalar type of vertex is analyzed with the QCD sum rules and the local-QCD sum rules. Correspondingly, the hadronic coupling constants of D2*(2460), Ds2*(2573), B2*(5747) and Bs2*(5840), and their decay widths are calculated. The results indicate that the QCD sum rules and the local-QCD sum rules give the consistent descriptions. Finally, the full widths of these 4 tensor mesons are discussed in detail.
The magnetic dipole moments of the ${cal D}_2$, and ${cal D}_{S_2}$, ${cal B}_2$, and ${cal B}_{S_2}$ heavy tensor mesons are estimated in framework of the light cone QCD sum rules. It is observed that the magnetic dipole moments for the charged meso ns are larger than that of its neutral counterpart. It is found that the $SU(3)$ flavor symmetry violation is about 10% in both $b$ and $c$ sectors.
In this article, we analyze tensor-vector-pseudoscalar(TVP) type of vertices $D_{2}^{*+}D^{+}rho$, $D_{2}^{*0}D^{0}rho$, $D_{2}^{*+}D^{+}omega$, $D_{2}^{*0}D^{0}omega$, $B_{2}^{*+}B^{+}rho$, $B_{2}^{*0}B^{0}rho$, $B_{2}^{*+}B^{+}omega$, $B_{2}^{*0}B^ {0}omega$, $B_{s2}^{*}B_{s}phi$ and $D_{s2}^{*}D_{s}phi$, in the frame work of three point QCD sum rules. According to these analysis, we calculate their strong form factors which are used to fit into analytical functions of $Q^{2}$. Then, we obtain the strong coupling constants by extrapolating these strong form factors into deep time-like regions. As an application of this work, the coupling constants for radiative decays of these heavy tensor mesons are also calculated at the point of $Q^{2}=0$. With these coupling constants, we finally calculate the radiative decay widths of these tensor mesons.
51 - Olivier Leitner 2007
A short review on light scalar mesons is performed both in experiment and theory. A naive model, constrained by D branching ratios, is derived in order to make predictions on the wave functions of the $f_0(600)$ and $a_0(980)$ mesons. This leads us t o compute transition form factors between the pseudoscalar $B$ and scalar mesons.
89 - A. Krassnigg , M. Blank 2010
We investigate tensor mesons as quark-antiquark bound states in a fully covariant Bethe-Salpeter equation. As a first concrete step we report results for masses of J^{PC}=2^{++} mesons from the chiral limit up to bottomonium and sketch a comparison t o experimental data. All covariant structures of the fermion-antifermion system are taken into account and their roles and importance discussed in two different bases. We also present the general construction principle for covariant Bethe-Salpeter amplitudes of mesons with any spin and find eight covariant structures for any J>0.
التعليقات
جاري جلب التعليقات جاري جلب التعليقات
سجل دخول لتتمكن من متابعة معايير البحث التي قمت باختيارها
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا