Simple Supercuspidal $L$-Packets of Quasi-Split Classical Groups

1. Introduction
2. Simple supercuspidal representations of classical groups
3. Characters of simple supercuspidal representations
4. Arthur's local classification theorem
5. Simple supercuspidal $L$-packet of $Sp_{2n}$
6. Transfer factors at affine generic elements
7. Endoscopic lifting of simple supercuspidal $L$-packets of $SO_{2n}^{\mu }$
8. Simple supercuspidal $L$-packet of $SO_{2n+2}$ and $SO_{2n+2}^{\mathrm {ur}}$
9. Application: Formal degree conjecture for simple supercuspidal $L$-packets for some bad primes
A. Kloosterman sums and Gauss sums
B. Depth of simple supercuspidal representations
C. Spinor twists for $L$-packets of even orthogonal groups