X. Yuan
YOU?
Author Swipe
View article: Top quark forward-backward asymmetry in the little Higgs model
Top quark forward-backward asymmetry in the little Higgs model Open
A sizable difference in top quark pair forward backward asymmetry (AFB) is observed at Tevatron. The discrepancy triggers many new physics beyond the standard model (SM) and then constrains the parameter spaces in them. In this article we …
View article: Top Quark Forward-Backward Asymmetry in the Little Higgs Model
Top Quark Forward-Backward Asymmetry in the Little Higgs Model Open
We calculate the forward backward asymmetry of the top-pair production at TEVATRON up to next to leading order (NLO) in the little Higgs model (LHM). We find that the contribution of $Z_H$ can be large enough to make up the gap between sta…
View article: Final state interaction contribution to the observed<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>B</mml:mi><mml:mi>s</mml:mi></mml:msub></mml:math>decays into<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>K</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>K</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>π</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>K</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math>
Final state interaction contribution to the observeddecays intoand Open
Because at the tree level B-s -> K+K- is Cabibbo triple suppressed, so its branching ratio should be smaller than that of B-s -> pi K-+(-). The measurements present a reversed ratio as R = B(B-s -> pi K-+(-))/ B(B-s -> K+K-) similar to 4.9…
View article: <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>Σ</mml:mi><mml:mi>b</mml:mi></mml:msub><mml:mo>→</mml:mo><mml:msub><mml:mi>Σ</mml:mi><mml:mi>c</mml:mi></mml:msub></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>Ω</mml:mi><mml:mi>b</mml:mi></mml:msub><mml:mo>→</mml:mo><mml:msub><mml:mi>Ω</mml:mi><mml:mi>c</mml:mi></mml:msub></mml:math>weak decays in the light-front quark model
andweak decays in the light-front quark model Open
The successful operation of LHC provides a great opportunity to study the\nprocesses where heavy baryons are involved. {In this work we mainly study} the\nweak transitions of $\\Sigma_b\\to \\Sigma_c$. Assuming the reasonable\nquark-diquar…
View article: Can FSI explain the observed $B(B_s\rightarrow K^+K^-){>}B(B_s\rightarrow \pi^+K^-)$ anomaly?
Can FSI explain the observed $B(B_s\rightarrow K^+K^-){>}B(B_s\rightarrow \pi^+K^-)$ anomaly? Open
Because at the tree level $B_s\rightarrow K^+K^-$ is Cabibbo-triple suppressed, so its branching ratio should be smaller than that of $B_s\to \pi^+ K^-$. The measurements present a reversed ratio as $R=\mathcal B(B_s\rightarrow \pi^+K^-)/\…
View article: Is Z b (10610) a molecular state?
Is Z b (10610) a molecular state? Open
View article: Study on the mixing among the $0^{++}$ mesons around $1\sim 2$ $\mathrm{GeV}$ with the QCD sum rules
Study on the mixing among the $0^{++}$ mesons around $1\sim 2$ $\mathrm{GeV}$ with the QCD sum rules Open
We calculate the correlation functions of $0^{++}$ $q\bar q$, $s\bar s$ and glueball in the QCD sum rules and obtain the mass matrix where non-diagonal terms are determined by the cross correlations among the three states. Diagonalizing th…