TY - JOUR
T1 - Discrimination of models including doubly charged scalar bosons by using tau lepton decay distributions
AU - Sugiyama, Hiroaki
AU - Tsumura, Koji
AU - Yokoya, Hiroshi
N1 - Funding Information:
The work of H.S. was supported in part by the Grant-in-Aid for Young Scientists (B) No. 23740210 . The work of K.T. was supported, in part, by the Grant-in-Aid for Scientific research from the Ministry of Education, Science, Sports, and Culture (MEXT), Japan , No. 23104011 . The work of H.Y. was supported in part by the National Science Council of Taiwan under Grant No. NSC 100-2119-M-002-001 .
PY - 2012/10/22
Y1 - 2012/10/22
N2 - The doubly charged scalar boson (H ±±) is introduced in several models of the new physics beyond the standard model. The H ±± has Yukawa interactions with two left-handed charged leptons or two right-handed charged leptons depending on the models. We study kinematical properties of H ±± decay products through tau leptons in order to discriminate the chiral structures of the new Yukawa interaction. The chirality of tau leptons can be measured by the energy distributions of the tau decay products, and thus the chiral structure of the new Yukawa interaction can be traced in the invariant-mass distributions of the H ±± decay products. We perform simulation studies for the typical decay patterns of the H ±± with simple event selections and tau-tagging procedures, and show that the chiral structure of the Yukawa interactions of H ±± can be distinguished by measuring the invariant-mass distributions.
AB - The doubly charged scalar boson (H ±±) is introduced in several models of the new physics beyond the standard model. The H ±± has Yukawa interactions with two left-handed charged leptons or two right-handed charged leptons depending on the models. We study kinematical properties of H ±± decay products through tau leptons in order to discriminate the chiral structures of the new Yukawa interaction. The chirality of tau leptons can be measured by the energy distributions of the tau decay products, and thus the chiral structure of the new Yukawa interaction can be traced in the invariant-mass distributions of the H ±± decay products. We perform simulation studies for the typical decay patterns of the H ±± with simple event selections and tau-tagging procedures, and show that the chiral structure of the Yukawa interactions of H ±± can be distinguished by measuring the invariant-mass distributions.
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U2 - 10.1016/j.physletb.2012.09.044
DO - 10.1016/j.physletb.2012.09.044
M3 - Article
AN - SCOPUS:84867337575
VL - 717
SP - 229
EP - 234
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 1-3
ER -