메뉴 건너뛰기




Volumn 55, Issue 5, 1997, Pages 3156-3176

Phenomenology of two Higgs doublet models with flavor-changing neutral currents

Author keywords

[No Author keywords available]

Indexed keywords


EID: 0000320780     PISSN: 15507998     EISSN: 15502368     Source Type: Journal    
DOI: 10.1103/PhysRevD.55.3156     Document Type: Article
Times cited : (445)

References (72)
  • 8
    • 85038344600 scopus 로고    scopus 로고
    • Gorazd Cvetič, Electroweak Symmetry Breaking, Proceeding of the Budapest Workshop (World Scientific, Singapore, 1995)
    • Gorazd Cvetič, Electroweak Symmetry Breaking, Proceeding of the Budapest Workshop (World Scientific, Singapore, 1995).
  • 15
    • 85038290247 scopus 로고    scopus 로고
    • The only other contributions to the effective (Formula presented) and (Formula presented) vertices are from the SM (Formula presented) boson which we are ignoring since we expect the contributions from model III to be much bigger due to the presence of both neutral and charged scalars with large couplings to the top quark (see Fig. 11). Moreover, we expect model III to give bigger predictions, even with respect to model I and model II, due to the presence of the new FC couplings proportional to (Formula presented) and to the particular structure of the charged scalar couplings [see Eq. (9)]. See Ref. 15
    • The only other contributions to the effective (Formula presented) and (Formula presented) vertices are from the SM (Formula presented) boson which we are ignoring since we expect the contributions from model III to be much bigger due to the presence of both neutral and charged scalars with large couplings to the top quark (see Fig. 11). Moreover, we expect model III to give bigger predictions, even with respect to model I and model II, due to the presence of the new FC couplings proportional to (Formula presented) and to the particular structure of the charged scalar couplings [see Eq. (9)]. See Ref. 15 for the explicit calculation of (Formula presented) in the SM and in model I and model II 2HDM’s. Our expectations are also confirmed by the case of rare top decays, discussed in Sec. IV, in which the same form factors are used (see in particular Table I for a quantitative comparison of the SM and of the different types of 2HDM’s).
  • 16
    • 0002719608 scopus 로고
    • C.-H. Chang, X.-Q. Li, J.-X. Wang, and M.-Z. Yang, Phys. Lett. B313, 389 (1993).
    • (1993) Phys. Lett. B , vol.313 , pp. 389
  • 19
    • 85038347458 scopus 로고    scopus 로고
    • We also observe that in Ref. 7
    • We also observe that in Ref. 7 the form factors used in the analytical expressions for the rates [see their Eq. (10)] should include the factor (Formula presented), which is factored out in their Eq. (9), where the form factors are defined.
  • 20
    • 85038343034 scopus 로고    scopus 로고
    • Note that in Fig. 22 of Ref. 7
    • Note that in Fig. 22 of Ref. 7 the authors factor out the FC coupling dependence: (Formula presented). For (Formula presented) GeV and (Formula presented) GeV, taking as we did (Formula presented), this amounts to multiplying their results by a factor (Formula presented). Also note that, unlike them, we have not multiplied the (Formula presented) by the (Formula presented).
  • 24
    • 0028518084 scopus 로고
    • A. G. Ruggiero, 350, 45 (1994);
    • (1994) , vol.350 , pp. 45
    • Ruggiero, A.G.1
  • 25
    • 0028516879 scopus 로고
    • S. Chattopadhyay et al., 350, 53 (1994).
    • (1994) , vol.350 , pp. 53
    • Chattopadhyay, S.1
  • 26
    • 85038327963 scopus 로고
    • R. B. Palmer, “High Luminosity (Formula presented) Collider Design, ” Report No. SLAC-AAS-Note81, 1993 (unpublished).
    • (1993)
    • Palmer, R.B.1
  • 27
    • 85038332781 scopus 로고    scopus 로고
    • V. Barger, M. Berger, K. Fujii, J. F. Gunion, T. Han, C. Heusch, W. Hong, S. K. Oh, Z. Parsa, S. Rajpoot, R. Thun, and B. Willis, in Proceedings of the First Workshop on the Physics Potential and Development of (Formula presented) Colliders, Sausalito, CA, 1994, edited by D. Cline (unpublished)
    • V. Barger, M. Berger, K. Fujii, J. F. Gunion, T. Han, C. Heusch, W. Hong, S. K. Oh, Z. Parsa, S. Rajpoot, R. Thun, and B. Willis, in Proceedings of the First Workshop on the Physics Potential and Development of (Formula presented) Colliders, Sausalito, CA, 1994, edited by D. Cline (unpublished).
  • 31
    • 85038282429 scopus 로고
    • 65, 1772(E) (1981).
    • (1981) , vol.65 , pp. 1772
  • 32
    • 16144366978 scopus 로고    scopus 로고
    • NPBSE7
    • See, e.g., A. Soni, in Lattice ’95, Proceedings of the International Symposium, Melbourne, Australia, edited by T. D. Kieu et al. [Nucl. Phys. B (Proc. Suppl.)47, 43 (1996)]; NPBSE7
    • (1996) Nucl. Phys. B (Proc. Suppl.) , vol.47 , pp. 43
    • Soni, A.1    Kieu, T.D.2
  • 33
    • 58149212949 scopus 로고
    • G. Martinelli, in Lattice ’94, Proceedings of the International Symposium, Bielefeld, Germany, edited by F. Karsch et al. [ 42, 127 (1995)].
    • (1995) , vol.42 , pp. 127
    • Martinelli, G.1
  • 36
    • 85038322619 scopus 로고    scopus 로고
    • See Ref. 28
    • See Ref. 28.
  • 39
    • 33845326313 scopus 로고
    • Phys. Rev. D52, 6505 (1995).
    • (1995) Phys. Rev. D , vol.52 , pp. 6505
  • 40
    • 85038300303 scopus 로고    scopus 로고
    • fact, the SM predictions for the different (Formula presented) mixings reported in Table II include also QCD corrections
    • In fact, the SM predictions for the different (Formula presented) mixings reported in Table II include also QCD corrections.
  • 41
    • 85038305617 scopus 로고    scopus 로고
    • Results presented at the International Europhysics Conference on High Energy Physics, Brussels, 1995 (World Scientific, Singapore, 1995);, and at the 17th International Symposium on Lepton-Photon Interactions, Beijing, China, 1995 (unpublished)., See also LEP Electroweak Working Group Report No. 95-02 (unpublished)
    • Results presented at the International Europhysics Conference on High Energy Physics, Brussels, 1995 (World Scientific, Singapore, 1995);and at the 17th International Symposium on Lepton-Photon Interactions, Beijing, China, 1995 (unpublished).See also LEP Electroweak Working Group Report No. 95-02 (unpublished).
  • 42
    • 25544460978 scopus 로고
    • Particle Data Group, L. Montanet et al., Phys. Rev. D50, 1173 (1994).
    • (1994) Phys. Rev. D , vol.50 , pp. 1173
    • Montanet, L.1
  • 45
    • 4244196225 scopus 로고
    • CLEO Collaboration, R. Ammar et al., Phys. Rev. Lett.71, 674 (1993);
    • (1993) Phys. Rev. Lett. , vol.71 , pp. 674
    • Ammar, R.1
  • 46
    • 4244034193 scopus 로고
    • CLEO Collaboration, M. S. Alam et al., 74, 2885 (1995).
    • (1995) , vol.74 , pp. 2885
    • Alam, M.S.1
  • 47
    • 85038280885 scopus 로고    scopus 로고
    • Results presented at the XXXIst Rencontres de Moriond, “Electroweak Interactions and Unified Theories”, Les Arcs, France, 1996, edited by J. Trân Thanh Vân (unpublished)
    • Results presented at the XXXIst Rencontres de Moriond, “Electroweak Interactions and Unified Theories”, Les Arcs, France, 1996, edited by J. Trân Thanh Vân (unpublished).
  • 50
    • 85038294572 scopus 로고    scopus 로고
    • hep-ph/9606247
    • I. Dunietz, Fermilab Report No. FERMILAB-PUB-96-104-T, hep-ph/9606247 (unpublished);
    • Dunietz, I.1
  • 53
    • 4244210519 scopus 로고
    • Nucl. Phys.B421, 41 (1994).
    • (1994) Nucl. Phys. , vol.B421 , pp. 41
  • 56
    • 85038289968 scopus 로고    scopus 로고
    • According to the results of Sec. VI, we neglect the mixing with the first family
    • According to the results of Sec. VI, we neglect the mixing with the first family.
  • 57
    • 85038314411 scopus 로고    scopus 로고
    • passing, we should also mention that, we have also examined the decay (Formula presented) in model III. We found that due to the different couplings involved, this decay is never consistently enhanced with respect to the SM prediction
    • In passing, we should also mention that, we have also examined the decay (Formula presented) in model III. We found that due to the different couplings involved, this decay is never consistently enhanced with respect to the SM prediction.
  • 58
    • 85038303858 scopus 로고    scopus 로고
    • our calculation all the quarks except the top quark are taken to be massless, keeping (Formula presented) only in the (Formula presented) couplings as in Eq. (10)
    • In our calculation all the quarks except the top quark are taken to be massless, keeping (Formula presented) only in the (Formula presented) couplings as in Eq. (10).
  • 61
    • 85038279444 scopus 로고    scopus 로고
    • We assume that the changes for (Formula presented) and (Formula presented) in model III with suppressed FC couplings for the first family, i.e., in case 2 and case 3, are negligible
    • We assume that the changes for (Formula presented) and (Formula presented) in model III with suppressed FC couplings for the first family, i.e., in case 2 and case 3, are negligible.
  • 63
    • 4243421500 scopus 로고
    • CDF Collaboration, F. Abe et al., Phys. Rev. Lett.74, 2626 (1995);
    • (1995) Phys. Rev. Lett. , vol.74 , pp. 2626
    • Abe, F.1
  • 64
    • 4244105738 scopus 로고
    • D0 Collaboration, S. Abachi et al., 74, 2632 (1995).
    • (1995) , vol.74 , pp. 2632
    • Abachi, S.1
  • 66
    • 0041687138 scopus 로고    scopus 로고
    • ALEPH Collaboration, D. Buskulic et al., Phys. Lett. B377, 205 (1996).
    • (1996) Phys. Lett. B , vol.377 , pp. 205
    • Buskulic, D.1
  • 67
    • 0000805783 scopus 로고
    • UA1 Collaboration, C. Albajar et al., Phys. Lett. B262, 163 (1991).
    • (1991) Phys. Lett. B , vol.262 , pp. 163
    • Albajar, C.1
  • 68
    • 4243834169 scopus 로고    scopus 로고
    • CDF Collaboration, F. Abe et al., Phys. Rev. Lett.76, 4675 (1996).
    • (1996) Phys. Rev. Lett. , vol.76 , pp. 4675
    • Abe, F.1
  • 69
    • 0000805783 scopus 로고
    • UA1 Collaboration, C. Albajar et al., Phys. Lett. B262, 163 (1991).
    • (1991) Phys. Lett. B , vol.262 , pp. 163
    • Albajar, C.1
  • 72
    • 85038338431 scopus 로고    scopus 로고
    • Even if the pole terms are not explicitly given in Ref. 7
    • Even if the pole terms are not explicitly given in Ref. 7, they can be easily deduced from the corresponding logarithmic term (Formula presented) in each diagram.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.