b production (AFBb) is well consistent with the data of LEP Ⅰ at the Z-pole, but deviates from the data at √s=89.55 and 92.95 GeV which are slightly away from the pole. This deviation implies that there is still room for new physics. We calculate the AFBb at the vicinity of the Z-pole in the little Higgs model as well as other measurable parameters such as Rb and Rc, by which we may constrain the parameter space of the little Higgs model. This can be further tested in the newly proposed tera-Z factory. With the fitted parameters we further make predictions on AFBb and AFBt for m tt production at the International Linear Collider (ILC)."> Constraining parameter space of the little Higgs model using data from tera-Z factory and ILC -
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    Aaltonen T et al. (CDF collaboration). Phys. Rev. Lett., 2008, 101: 202001[2] Aaltonen T et al. (CDF collaboration). Phys. Rev. D, 2011, 83: 112003[3] Aaltonen T et al. (CDF collaboration). CDF note, 2012, 108107[4] Abazov V M et al. (The D0 collaboration). Phys. Rev. D, 2011, 84: 112005[5] Hollik W, Pagani D. Phys. Rev. D, 2011, 84: 093003[6] XIAO B, WANG Y K, ZHU S H. Phys. Rev. D, 2010, 82: 034026[7] Campbell J M, Ellis R K. Phys. Rev. D, 1999, 60: 113006[8] Cheung K, YUAN T C. Phys. Rev. D, 2011, 83: 074006[9] BAI Y, Hewett J L, Kaplan J et al. JHEP, 2011, 1103: 003[10] Berger E L, CAO Q H, CHEN C R et al. Phys. Rev. Lett., 2011, 106: 201801[11] Bhattacherjee B, Biswal S S, Ghosh D. Phys. Rev. D, 2011, 83: 091501[12] Barger V, Keung W Y, YU C T. Phys. Lett. B, 2011, 698: 243[13] Patel K M, Sharma P. JHEP, 2011, 1104: 085[14] Ligeti Z, Schmaltz M, Tavares G M. JHEP, 2011, 1106: 109[15] Grinstein B, Kagan A L, Trott M et al. arXiv:hepph/1102.3374[16] Gresham M I, Kim I W, Zurek K M. arXiv:hepph/1103.3501[17] Davoudiasl H, McElmurry T, Soni A. Phys. Rev. D, 2012, 85: 054001[18] Atwood D, Gupta S K, Soni A. JHEP, 2013, 1304: 035[19] GUO Xing-Dao, ZHANG Yin-Jie, ZHAO Shu-Min et al. Top Quark Forward-Backward Asymmetry in the Little Higgs Model. Chin. Phys. C, to be published[20] Schael S et al. (ALEPH and DELPHI and L3 and OPAL and SLD and LEP Electroweak Working Group and SLD Electroweak Group and SLD Heavy Flavour Group collaborations). Phys. Rept., 2006, 427: 257[21] Burgers G, Jegerlehner F. In: Altarelli G, Kleiss R, Verzegnassi C eds Z Physics At LEP 1. Proc. Workshop Geneva, Switzerland: Standard Physics, September 4-5, 1989[22] HAN T, Logan H E, McElrath B et al. Phys. Rev. D, 2003, 67: 095004[23] Acciarri M et al. (The L3 collaboration). Phys. Lett. B, 2000, 485: 71[24] LI Gang, LI Tong, LI Xue-Qian et al. Nucl. Phys. B, 2005, 727: 301[25] Eidelman S et al. (Partical Data Group). Phys. Lett. B, 2004, 592: 1[26] YAO W M et al. Particle Physics Booklet, 2006. 24[27] Fritzsch H, ZHOU Y. Phys. Rev. D, 2003, 68: 034015[28] Molnar P, Grunewald M. Phys. Lett. B, 1999, 461: 149[29] Czarnecki A, Marciano W J. Int. J. Mod. Phys. A, 2000, 15: 2365[30] Erler J, Langacker P. Phys. Lett. B, 2008, 667: 1[31] Abbiendi G et al. (The OPAL collaboration). Phys. Lett. B, 2003, 577: 18[32] CHEN M C, Dawson S. Phys. Rev. D, 2004, 70: 015003[33] Donoghue J F, Golowich E, Holstein B R. Dynamics of the Standard Model. Cambridge: Cambridge University Press, 1996[34] YUE C X, WANG W. Nucl. Phys. B, 2004, 683: 48[35] YUE C X, WANG W, ZHANG F. Nucl. Phys. B, 2005, 716: 199[36] WANG X, CHEN J, LIU Y et al. Phys. Rev. D, 2006, 74: 015006[37] Hubisz J, Meade P, Noble A et al. JHEP, 2006, 0601: 135[38] WANG X, LIU S, ZENG Q et al. Commun. Theor. Phys., 2008, 49: 421[39] Boersma J, Whitbeck A. Phys. Rev. D, 2008, 77: 055012[40] LIU J Y, SI Z G, YUE C X. Phys. Rev. D, 2010, 81: 015011[41] Cheung K, Lee K Y, Shim S Y et al. Phys. Rev. D, 2013, 87: 097701[42] YANG Xiao-Dong, XIONG Shou-Jian, MA Wen-Gan et al. Phys. Rev. D, 2014, 89: 014008[43] Abazov V M et al. (D0 collaboration), arXiv:hepex/1403.1294[44] Abazov V M et al. (D0 collaboration). arXiv:hepex/1405.0421

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