Effects of the R-parity violation in the minimal supersymmetric standard model on dilepton pair production at the CERN LHC

We investigate in detail the effects of the R-parity lepton number violation in the minimal supersymmetric standard model (MSSM) on the parent process $pp \to e^+ e^- + X$ at the CERN Large Hadron Collider (LHC). The numerical comparisons between the contributions of the R-parity violating effects to the parent process via the Drell-Yan subprocess and the gluon-gluon fusion are made. We find that the R-violating effects on $e^+ e^-$ pair production at the LHC could be significant. The results show that the cross section of the $e^+ e^-$ pair productions via gluon-gluon collision at the LHC can be of the order of $10^2$ fb, and this subprocess maybe competitive with the production mechanism via the Drell-Yan subprocess. We give also quantitatively the analysis of the effects from both the mass of sneutrino and coupling strength of the R-parity violating interactions.Comment: 18 pages, 10 figures, accepted by Phys. Rev.

A textile-based heat flux sensor

With the emergence of smart textiles, the research into textile-based sensors has increased as well. These sensors have the advantage of being flexible, and compatible with clothing thus more unobtrusively integratable and more comfortable to wear. On the other hand, one of the purposes of clothing is to enhance the thermal comfort of the wearer. Therefore, a textile-based sensor that can measure the heat flux between the body and its surrounding micro environment has been developed and manufactured on an industrial scale. The sensor is a woven structure and the sensing component is a thermoelectric wire inserted during the weaving process. In this way a flexible and breathable heat flux sensor is obtained