Probing R-parity violation in the production of $t \bar{c}(c \bar{t})$ on the lepton colliders

Zeng-Hui, Yu; Pietschmann, Herbert.; Wen-Gan, Ma; Liang, Han; Yi, Jiang

Probing R-parity violation in the production of $t \bar{c}(c \bar{t})$ on the lepton colliders

Authors

Zeng-Hui, Yu

Pietschmann, Herbert.

Wen-Gan, Ma

Liang, Han

Yi, Jiang

Description

We studied the process $e^{+}e^{-} \to t\bar{c}+c\bar{t}$ in a R_{p} violating supersymmetric model with effects from both B- and L-violating interactions. The calculation shows that it is possible to either detect the R_{p} violating signal at the Next Linear Collider or get more stringent constraints on the heavy-flavor $\rlap/R_{p}$ couplings. A comparision with results from $γγ\to t\bar{c}+ c\bar{t}$ may allow to distinguish between B- and L-violating interactions. For very clean background conditions and R_{p} violation parameters close to present limits, a future detection of B-violating interactions should be possible. The process of $μ^{+} μ^{-} \to t \bar{c}+c\bar{t}$ is also considered.
16 pages, 4 figures