Constraints on the masses of fourth generation quarks

Journal Article · Mon Jun 01 00:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.113013· OSTI ID:21296433

Hosseini, S; Radkhorrami, Y ^[1]; Mohammadi Najafabadi, M ^[2]; Moshaii, A ^[1]; Tazik, N ^[3]

---

1. Physics Department, Tarbiat Modarres University, Tehran (Iran, Islamic Republic of)
2. School of Particles and Accelerators, Institute for Research in Fundamental Sciences (IPM) P.O. Box 19395-5531, Tehran (Iran, Islamic Republic of)
3. Physics Department, Semnan University, Semnan (Iran, Islamic Republic of)

We study the one-loop contribution of the down-type quark of the standard model-like fourth generation (b{sup '}) on the top quark electric dipole moment. Using the known limits on the top quark electric dipole moments, we place limits on the b{sup '} mass. Then, from the estimated ratio for the masses of the fourth generation of quarks from other studies and the achieved bound from top quark electric dipole moments on m{sub b{sup '}}, we obtain a limit for the up-type quark of fourth generation (t{sup '}) mass.

• OSTI ID: 21296433
• Journal Information: Physical Review. D, Particles Fields, Vol. 79, Issue 11; Other Information: DOI: 10.1103/PhysRevD.79.113013; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ELECTRIC DIPOLE MOMENTS
MASS
QUARKS
STANDARD MODEL
T QUARKS