Catálogo de publicaciones - revistas

<jats:title>Abstract</jats:title> <jats:p>We investigate in detail the charged Higgs production associated with a <jats:italic>W</jats:italic> boson at electron-positron colliders within the framework of the Type-I two-Higgs-doublet model (THDM). We calculate the integrated cross section at the LO and analyze the dependence of the cross section on the THDM parameters and the colliding energy in a benchmark scenario of the input parameters of the Higgs sector. The numerical results show that the integrated cross section is sensitive to the charged Higgs mass, especially in the vicinity of <jats:inline-formula> <jats:tex-math><?CDATA $m_{H^{\pm}} \simeq 184~ {\rm GeV}$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093101_M2.jpg" xlink:type="simple" /> </jats:inline-formula> at a <jats:inline-formula> <jats:tex-math><?CDATA $500~ {\rm GeV}$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093101_M3.jpg" xlink:type="simple" /> </jats:inline-formula> <jats:inline-formula> <jats:tex-math><?CDATA $e^+e^-$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093101_M4.jpg" xlink:type="simple" /> </jats:inline-formula> collider, and decreases consistently with the increase of <jats:inline-formula> <jats:tex-math><?CDATA $\tan\beta$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093101_M5.jpg" xlink:type="simple" /> </jats:inline-formula> in the low <jats:inline-formula> <jats:tex-math><?CDATA $\tan\beta$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093101_M6.jpg" xlink:type="simple" /> </jats:inline-formula> region. The peak in the colliding energy distribution of the cross section arises from the resonance of the loop integrals, and it moves towards the low colliding energy with the increase of <jats:inline-formula> <jats:tex-math><?CDATA $m_{H^{\pm}}$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093101_M7.jpg" xlink:type="simple" /> </jats:inline-formula>. We also study the two-loop NLO QCD corrections to both the integrated cross section and the angular distribution of the charged Higgs boson and find that the QCD relative correction is also sensitive to the charged Higgs mass and strongly depends on the final-state phase space. For <jats:inline-formula> <jats:tex-math><?CDATA $\tan\beta = 2$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093101_M8.jpg" xlink:type="simple" /> </jats:inline-formula>, the QCD relative correction at a <jats:inline-formula> <jats:tex-math><?CDATA $500~ {\rm GeV}$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093101_M9.jpg" xlink:type="simple" /> </jats:inline-formula> <jats:inline-formula> <jats:tex-math><?CDATA $e^+e^-$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093101_M10.jpg" xlink:type="simple" /> </jats:inline-formula> collider varies in the range of [-10%, 11%] as <jats:inline-formula> <jats:tex-math><?CDATA $m_{H^{\pm}}$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093101_M11.jpg" xlink:type="simple" /> </jats:inline-formula> increases from 150 to 400 GeV. </jats:p>

<jats:title>Abstract</jats:title> <jats:p>We investigate the strongly coupled minimal walking technicolor model (MWT) in the framework of a bottom-up holographic model, where the global <jats:italic>SU(4)</jats:italic> symmetry breaks into <jats:inline-formula> <jats:tex-math><?CDATA $ SO(4)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093102_M2.jpg" xlink:type="simple" /> </jats:inline-formula> subgroups. In the holographic model, we found that 125 GeV composite Higgs particles and small Peskin–Takeuchi <jats:italic>S</jats:italic> parameter can be achieved simultaneously. In addition, the model predicts a large number of particles at the TeV scale, including dark matter candidates Technicolor Interacting Massive Particles (TIMPs). If we consider the dark matter nuclear spin-independent cross-section in the range of <jats:inline-formula> <jats:tex-math><?CDATA $ 10^{-45}\sim 10 ^ {-48} \;{\rm{cm}}^2$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093102_M3.jpg" xlink:type="simple" /> </jats:inline-formula>, which can be detected by future experiments, the mass range of TIMPs predicted by the holographic technicolor model is <jats:inline-formula> <jats:tex-math><?CDATA $ 2 \sim 4$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093102_M4.jpg" xlink:type="simple" /> </jats:inline-formula> TeV. </jats:p>

<jats:title>Abstract</jats:title> <jats:p>We evaluate the discovery potential for the heavy Higgs bosons at the LHC energy upgrade with <jats:inline-formula> <jats:tex-math><?CDATA $\sqrt{s}=27$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093103_M1.jpg" xlink:type="simple" /> </jats:inline-formula> TeV. We assume the degenerate mass spectrum and an approximate alignment limit in the Type-II Two Higgs Doublet Model for illustration. We explore the observability of the heavy neutral Higgs bosons by examining the clean signals from <jats:inline-formula> <jats:tex-math><?CDATA $H^0\to W^+W^-, ZZ$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093103_M2.jpg" xlink:type="simple" /> </jats:inline-formula> via gluon-gluon fusion production. The associated production of a top quark and a charged Higgs boson via <jats:inline-formula> <jats:tex-math><?CDATA $gb\to t H^\pm$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093103_M3.jpg" xlink:type="simple" /> </jats:inline-formula> is adopted to predict the discovery potential of heavy charged Higgses. We also emphasize the potential importance of the electroweak production of Higgs boson pairs, i.e. <jats:inline-formula> <jats:tex-math><?CDATA $pp\to W^\ast \to H^\pm A^0$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093103_M4.jpg" xlink:type="simple" /> </jats:inline-formula> and <jats:inline-formula> <jats:tex-math><?CDATA $pp\to Z^\ast/\gamma^\ast \to H^+ H^-$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093103_M5.jpg" xlink:type="simple" /> </jats:inline-formula>. These are only governed by pure electroweak gauge couplings and can provide complementary information to the conventional signals in the determination of the nature of the Higgs sector. </jats:p>

<jats:title>Abstract</jats:title> <jats:p>Recently, a vector charmonium-like state <jats:inline-formula> <jats:tex-math><?CDATA $Y(4626)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093104_M2.jpg" xlink:type="simple" /> </jats:inline-formula> was observed in the portal of <jats:inline-formula> <jats:tex-math><?CDATA $D^+_sD_{s1}(2536)^-$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093104_M3.jpg" xlink:type="simple" /> </jats:inline-formula>. This intrigues an active discussion on the structure of the resonance because it has obvious significance for gaining a better understanding on its hadronic structure that contains suitable inner constituents. Therefore, this observation concerns the general theoretical framework about possible structures of exotic states. Since the mass of <jats:inline-formula> <jats:tex-math><?CDATA $Y(4626)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093104_M4.jpg" xlink:type="simple" /> </jats:inline-formula> is slightly above the production threshold of <jats:inline-formula> <jats:tex-math><?CDATA $ D^+_s D_{s1}(2536)^- ,$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093104_M5.jpg" xlink:type="simple" /> </jats:inline-formula> whereas it is below that of <jats:inline-formula> <jats:tex-math><?CDATA $D^ * _s\bar D_{s1}(2536)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093104_M6.jpg" xlink:type="simple" /> </jats:inline-formula> with the same quark contents as that of <jats:inline-formula> <jats:tex-math><?CDATA $D^+_s D_{s1}(2536)^-$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093104_M7.jpg" xlink:type="simple" /> </jats:inline-formula>, it is natural to conjecture that <jats:inline-formula> <jats:tex-math><?CDATA $Y(4626)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093104_M8.jpg" xlink:type="simple" /> </jats:inline-formula> is a molecular state of <jats:inline-formula> <jats:tex-math><?CDATA $D^{ * }_s\bar D_{s1}(2536)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093104_M9.jpg" xlink:type="simple" /> </jats:inline-formula>, as suggested in the literature. Confirming or negating this allegation would shed light on the goal we are concerned with. We calculate the mass spectrum of a system composed of a vector meson and an axial vector i.e., <jats:inline-formula> <jats:tex-math><?CDATA $D^ * _s\bar D_{s1}(2536)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093104_M10.jpg" xlink:type="simple" /> </jats:inline-formula> within the framework of the Bethe-Salpeter equations. Our numerical results show that the dimensionless parameter <jats:inline-formula> <jats:tex-math><?CDATA $\lambda$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093104_M11.jpg" xlink:type="simple" /> </jats:inline-formula> in the form factor, which is phenomenologically introduced to every vertex, is far beyond the reasonable range for inducing even a very small binding energy <jats:inline-formula> <jats:tex-math><?CDATA $\Delta E$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093104_M12.jpg" xlink:type="simple" /> </jats:inline-formula>. It implies that the <jats:inline-formula> <jats:tex-math><?CDATA $D^ * _s\bar D_{s1}(2536)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093104_M13.jpg" xlink:type="simple" /> </jats:inline-formula> system cannot exist in the nature as a hadronic molecule in this model. Therefore, we may not be able to assume the resonance <jats:inline-formula> <jats:tex-math><?CDATA $Y(4626)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093104_M14.jpg" xlink:type="simple" /> </jats:inline-formula> to be a bound state of <jats:inline-formula> <jats:tex-math><?CDATA $ D^ * _s\bar D_{s1}(2536) ,$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093104_M15.jpg" xlink:type="simple" /> </jats:inline-formula> and instead, it could be attributed to something else, such as a tetraquark. </jats:p>

<jats:title>Abstract</jats:title> <jats:p>By studying the <jats:inline-formula> <jats:tex-math><?CDATA $\eta_c$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093105_M1.jpg" xlink:type="simple" /> </jats:inline-formula> exclusive decay to double glueballs, we introduce a model to phenomenologically mimic the gluon-pair-vacuum interaction vertices, namely the <jats:inline-formula> <jats:tex-math><?CDATA $0^{++}$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093105_M2.jpg" xlink:type="simple" /> </jats:inline-formula> model. Based on this model, we study glueball production in pseudoscalar quarkonium decays, explicitly <jats:inline-formula> <jats:tex-math><?CDATA $\eta_c \to f_0(1500)\eta(1405)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093105_M3.jpg" xlink:type="simple" /> </jats:inline-formula>, <jats:inline-formula> <jats:tex-math><?CDATA $\eta_b\to f_0(1500)\eta(1405)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093105_M4.jpg" xlink:type="simple" /> </jats:inline-formula> , and <jats:inline-formula> <jats:tex-math><?CDATA $\eta_b\to f_0(1710)\eta(1405)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093105_M5.jpg" xlink:type="simple" /> </jats:inline-formula> processes. Among them <jats:inline-formula> <jats:tex-math><?CDATA $f_0(1500)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093105_M6.jpg" xlink:type="simple" /> </jats:inline-formula> and <jats:inline-formula> <jats:tex-math><?CDATA $f_0(1710)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093105_M7.jpg" xlink:type="simple" /> </jats:inline-formula> are well-known scalars possessing large glue components, while <jats:inline-formula> <jats:tex-math><?CDATA $\eta(1405)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093105_M8.jpg" xlink:type="simple" /> </jats:inline-formula> is a potential candidate for a pseudoscalar glueball. The preliminary calculation results indicate that these processes are marginally accessible in the presently running experiments BES III, BELLE II, and LHCb. </jats:p>

<jats:title>Abstract</jats:title> <jats:p>We reduce all the most complicated Feynman integrals in two-loop five-light-parton scattering amplitudes to basic master integrals, while other integrals can be reduced even easier. Our results are expressed as systems of linear relations in the block-triangular form, very efficient for numerical calculations. Our results are crucial for complete next-to-next-to-leading order quantum chromodynamics calculations for three-jet, photon, and/or hadron production at hadron colliders. To determine the block-triangular relations, we develop an efficient and general method, which may provide a practical solution to the bottleneck problem of reducing multiloop multiscale integrals.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>Based on the prediction of a <jats:inline-formula> <jats:tex-math><?CDATA $D^*\bar{D}^*$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093107_M4.jpg" xlink:type="simple" /> </jats:inline-formula> molecular state <jats:inline-formula> <jats:tex-math><?CDATA $Z_c(4000)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093107_M5.jpg" xlink:type="simple" /> </jats:inline-formula> with isospin <jats:inline-formula> <jats:tex-math><?CDATA $I=1$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093107_M6.jpg" xlink:type="simple" /> </jats:inline-formula> in the coupled channel approach, we suggest the search for this state in the reaction <jats:inline-formula> <jats:tex-math><?CDATA $B^- \to J/\psi \rho^0 K^-$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093107_M7.jpg" xlink:type="simple" /> </jats:inline-formula>. By considering the final state interactions of <jats:inline-formula> <jats:tex-math><?CDATA $J/\psi \rho$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093107_M8.jpg" xlink:type="simple" /> </jats:inline-formula> and <jats:inline-formula> <jats:tex-math><?CDATA $D^{*0}\bar{D}^{*0}$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093107_M9.jpg" xlink:type="simple" /> </jats:inline-formula> and the contribution from the <jats:inline-formula> <jats:tex-math><?CDATA $K_1(1270)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093107_M10.jpg" xlink:type="simple" /> </jats:inline-formula> resonance, we observed that the <jats:inline-formula> <jats:tex-math><?CDATA $J/\psi\rho$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093107_M11.jpg" xlink:type="simple" /> </jats:inline-formula> mass distribution shows a peak around 4000 MeV, which might be associated with the <jats:inline-formula> <jats:tex-math><?CDATA $D^*\bar{D}^*$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093107_M12.jpg" xlink:type="simple" /> </jats:inline-formula> molecular state <jats:inline-formula> <jats:tex-math><?CDATA $Z_c(4000)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093107_M13.jpg" xlink:type="simple" /> </jats:inline-formula>. The search for <jats:inline-formula> <jats:tex-math><?CDATA $Z_c(4000)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093107_M14.jpg" xlink:type="simple" /> </jats:inline-formula> in the reaction <jats:inline-formula> <jats:tex-math><?CDATA $B^- \to J/\psi \rho^0 K^-$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_093107_M15.jpg" xlink:type="simple" /> </jats:inline-formula> is critical for understanding the internal structures of exotic hadrons. Our predictions can be tested by the Belle II and LHCb in future studies. </jats:p>

<jats:title>Abstract</jats:title> <jats:p>The lifetime of the <jats:inline-formula> <jats:tex-math><?CDATA $2_{1}^{+}$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_094001_M2.jpg" xlink:type="simple" /> </jats:inline-formula> state in <jats:inline-formula> <jats:tex-math><?CDATA $^{106}$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_094001_M3.jpg" xlink:type="simple" /> </jats:inline-formula>Cd populated via the <jats:inline-formula> <jats:tex-math><?CDATA $^{94}$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_094001_M4.jpg" xlink:type="simple" /> </jats:inline-formula>Zr ( <jats:inline-formula> <jats:tex-math><?CDATA $^{16}$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_094001_M5.jpg" xlink:type="simple" /> </jats:inline-formula>O, 4n) <jats:inline-formula> <jats:tex-math><?CDATA $^{106}$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_094001_M6.jpg" xlink:type="simple" /> </jats:inline-formula>Cd reaction has been measured with the Recoil Distance Doppler Shift technique in combination with the Differential Decay Curve Method. By subtracting the contamination in the data, the mean lifetime of the <jats:inline-formula> <jats:tex-math><?CDATA $I^{\pi}$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_094001_M7.jpg" xlink:type="simple" /> </jats:inline-formula>=2 <jats:inline-formula> <jats:tex-math><?CDATA $^{+}_{1}$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_094001_M8.jpg" xlink:type="simple" /> </jats:inline-formula> 633 keV state was determined as 9.9 (12) ps. The <jats:inline-formula> <jats:tex-math><?CDATA $B(E2)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_094001_M9.jpg" xlink:type="simple" /> </jats:inline-formula> value calculated in this study is in good agreement with the experimental systematics and was compared to the shell model calculations. </jats:p>

<jats:title>Abstract</jats:title> <jats:p>We develop a covariant kinetic theory for massive fermions in a curved spacetime and an external electromagnetic field based on quantum field theory. We derive four coupled semi-classical kinetic equations accurate to <jats:inline-formula> <jats:tex-math><?CDATA $O(\hbar)$?></jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cpc_44_9_094101_M1.jpg" xlink:type="simple" /> </jats:inline-formula>, which describe the transports of particle number and spin degrees of freedom. The relationship with chiral kinetic theory is discussed. As an application, we study spin polarization in the presence of finite Riemann curvature and an electromagnetic field in both local and global equilibrium states. </jats:p>

<jats:title>Abstract</jats:title> <jats:p>The survival probability of an excited compound nucleus was studied using two different approaches of the washing out of shell effects with excitation energy based on a superasymmetric reaction system. The estimated evaporation residue cross sections based on the two different methods are compared with the available experimental data. Both methods are in agreement with the experimental data to a certain extent for some specific reactions and <jats:italic>xn</jats:italic> emission channels. </jats:p>