Embeddings of braid groups into mapping class groups and their homology
  We construct several families of embeddings of braid groups into mapping class groups of orientable and non-orientable surfaces and prove that they induce the trivial map in stable homology in the orientable case, but not so in the non-orientable case. We show that these embeddings are non-geometric in the sense that the standard generators of the braid group are not mapped to Dehn twists. 
Carl-Friedrich B\"odigheimer and Ulrike Tillmann
math.AT math.GT