Chinese Physics C > 2018, Vol. 42 > Issue(10): 103102 DOI: 10.1088/1674-1137/42/10/103102

T-odd top partner pair production in the dilepton final states at the LHC in the littlest Higgs Model with T-parity

1.
College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China
2.
Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing 210023, China

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Abstract：
In the littlest Higgs model with T-parity, we discuss the pair production of the T-odd top partner ( T_) that decays almost 100% into the top quark and the lightest T-odd particle ( A _H). Considering the current constraints, we investigate the observability of the T-odd top partner pair production through the process pp→ T_ T_→ t t A _H A _Hin the final states with two leptons at 14 TeV LHC. We analyze the signal significance and found that the lower limits on the T-odd top partner mass are approximately 1.2 TeV, 1.3 TeV, and 1.4 TeV at the 2 σconfidence level at 14 TeV LHC with an integrated luminosities of 30 fb ^-1, 100 fb ^-1, and 300 fb ^-1, respectively. This lower limit can be increased to approximately 1.5(1.6) TeV if we used 1000(3000) fb ^-1of the integrated luminosity.
- top partner,
- LHC,
- littlest Higgs Model with T-parity

References

[1]	G. Aad et al (ATLAS Collaboration), Phys. Lett. B,, 716:1 (2012)
[2]	S. Chatrchyan et al (CMS Collaboration), Phys. Lett. B, 716:30 (2012)
[3]	L. Susskind, Phys. Rev. D, 20:2619 (1979)
[4]	see examples:J. Li, Z. G. Si, L. Wu, and J. Yue, Phys. Lett. B, 779:72 (2018); J. Cao, L. Wang, L. Wu, and J. M. Yang, Phys. Rev. D, 84:074001 (2011); A. Kobakhidze, L. Wu, and J. Yue, JHEP, 1410:100 (2014)
[5]	H. C. Cheng and I. Low, JHEP, 0309:051 (2003); JHEP, 0408:061 (2004); I. Low, JHEP, 0410:067 (2004)
[6]	N. Liu, L. Wu, B. F. Yang, and M. C. Zhang, Phys. Lett. B, 753:664-669 (2016); H. Y. Wang and B. F. Yang, Adv. High Energy Phys., 2017, 5463128 (2017); B. F. Yang, B. F. Hou, and H. Y. Zhang, Nucl. Phys. B, 929:207 (2018)
[7]	G. Aad et al (ATLAS Collaboration), ATLAS-CONF-2016-013; ATLAS-CONF-2016-101; ATLAS-CONF-2016-102; ATLAS-CONF-2017-015; S. Chatrchyan et al (CMS Collaboration), CMS PAS B2G-15-008; CMS PAS B2G-16-001; CMS PAS SUS-16-029, CMS PAS SUS-16-049; CMS PAS SUS-16-028; CMS PAS SUS-16-051
[8]	G. Aad et al (ATLAS Collaboration), ATLAS-CONF-2017-034, CERN-EP-2017-150
[9]	S. Chatrchyan et al (CMS Collaboration), CMS PAS SUS-16-027
[10]	C. C. Han, A. Kobakhidze, N. Liu, L. Wu, and B. F. Yang, Nucl. Phys. B, 890:388 (2015); Lorenzo Basso, Jeremy Andrea, JHEP, 1502:032 (2015); J. Reuter, M. Tonini, JHEP, 1501:088 (2015); Y. B. Liu, Phys. Rev. D, 95:035013 (2017); Y. B. Liu, Y. Q. Li, Eur. Phys. J. C, 77:654 (2017); M. Chala, Phys.Rev. D, 96:015028 (2017)
[11]	J. Reuter, M. Tonini, and M. de Vries, JHEP, 1402:053 (2014); B. F. Yang, G. F. Mi, and N. Liu, JHEP, 1410:47 (2014)
[12]	G. Aad et al (ATLAS Collaboration), Phys. Rev. Lett., 108:041805 (2012); G. Aad et al (ATLAS Collaboration), JHEP, 1211:094 (2012)
[13]	H. C. Cheng, I. Low, and L. T. Wang, Phys. Rev. D, 74:055001 (2006); A. Anandakrishnan, J. H. Collins, M. Farina, E. Kuflik, and M. Perelstein, Phys. Rev. D, 93:075009 (2016)
[14]	P. Meade and M. Reece, Phys. Rev. D, 74:015010 (2006)
[15]	T. Han, R. Mahbubani, D. G. E. Walker, and L. T. Wang, JHEP, 0905:117 (2009)
[16]	L. Wu, B. F. Yang, and M. C. Zhang, JHEP, 12:152 (2016); B. F. Yang, J. Z. Han, and N. Liu, Phys. Rev. D, 95:035010 (2017); B. F. Yang, Z. Y. Liu and N. Liu, Chin. Phys. C, 41(4):043103 (2017)
[17]	P. Bechtle, S. Heinemeyer, O. Stl, T. Stefaniak, and G. Weiglein, Eur. Phys. J. C, 74:2711 (2014); O. Stl, T. Stefaniak, PoS EPS-HEP, 2013:314 (2013); P. Bechtle, S. Heinemeyer, O. Stl, T. Stefaniak, and G. Weiglein, JHEP, 1411:039 (2014)
[18]	P. Bechtle, O. Brein, S. Heinemeyer, G. Weiglein, and K. E. Williams, Comput. Phys. Commun., 181:138-167 (2010); Comput. Phys. Commun., 182:2605-2631 (2011); P. Bechtle, O. Brein, S. Heinemeyer, O. Stl, T. Stefaniak, G. Weiglein, and K. Williams, PoS CHARGED 2012, 024 (2012); Eur. Phys. J. C, 74:2693 (2014); P. Bechtle, S. Heinemeyer, O. Stl, T. Stefaniak, and G. Weiglein, Eur. Phys. J. C, 75:421 (2015)
[19]	C. R. Chen, K. Tobe, and C.-P. Yuan, Phys. Lett. B, 640:263 (2006)
[20]	L. Wu, B. F. Yang and M. C. Zhang, JHEP, 12:152 (2016)
[21]	D. Dercks, G. Moortgat-Pick, J. Reuter, S. Y. Shim, arXiv:1801.06499
[22]	J. Alwall et al, JHEP, 07:079 (2014)
[23]	M. Czakon, P. Fiedler and A. Mitov, Phys. Rev. Lett., 110:252004 (2013); M. Czakon and A. Mitov, JHEP, 01:080 (2013); M. Czakon and A. Mitov, JHEP, 12:054 (2012); P. Brnreuther, M. Czakon and A. Mitov, Phys. Rev. Lett., 109:132001 (2012); M. Cacciari, M. Czakon, M. Mangano, A. Mitov and P. Nason, Phys. Lett. B, 710:612 (2012); M. Czakon and A. Mitov, Comput. Phys. Commun., 185:2930 (2014); N. Kidonakis, Phys. Rev. D, 82:054018 (2010)
[24]	T. Sjostrand, S. Mrenna, and P. Z. Skands, JHEP, 0605:026 (2006)
[25]	J. de Favereau et al, JHEP, 1402:057 (2014)
[26]	M. Cacciari, G. P. Salam, and G. Soyez, Eur. Phys. J. C, 72:1896 (2012)
[27]	M. Cacciari, G. P. Salam, and G. Soyez, JHEP, 04:063 (2008)
[28]	C. Patrignani et al (Particle Data Group), Chin. Phys. C, 40(10):100001 (2016)
[29]	C. G. Lester and D. J. Summers, Phys. Lett. B, 463:99 (1999); A. Barr, C. Lester, and P. Stephens, J. Phys. G 29:2343 (2003)
[30]	M. Drees et al, Comput. Phys. Commun., 187:227 (2014) J. S. Kim, D. Schmeier, J. Tattersall and K. Rolbiecki, Comput. Phys. Commun., 196:535-562 (2015)
[31]	G. Cowan, K. Cranmer, E. Gross, and O. Vitells, Eur. Phys. J. C, 71:1554 (2011)

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Bingfang Yang, Huaying Zhang, Biaofeng Hou and Ning Liu. T-odd top partner pair production in the dilepton final states at the LHC in the littlest Higgs Model with T-parity[J]. Chinese Physics C, 2018, 42(10): 103102. doi: 10.1088/1674-1137/42/10/103102

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Received: 2018-05-18

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Supported by National Natural Science Foundation of China (NNSFC) (11405047, 11305049) and the Startup Foundation for Doctors of Henan Normal University (qd15207).

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通讯作者:陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

T-odd top partner pair production in the dilepton final states at the LHC in the littlest Higgs Model with T-parity

1. College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China

2. Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing 210023, China

Received Date:2018-05-18

Available Online:2018-10-05

Fund Project:Supported by National Natural Science Foundation of China (NNSFC) (11405047, 11305049) and the Startup Foundation for Doctors of Henan Normal University (qd15207).

Abstract:In the littlest Higgs model with T-parity, we discuss the pair production of the T-odd top partner (T_) that decays almost 100% into the top quark and the lightest T-odd particle (A_H). Considering the current constraints, we investigate the observability of the T-odd top partner pair production through the processpp→T_T_→ttA_HA_Hin the final states with two leptons at 14 TeV LHC. We analyze the signal significance and found that the lower limits on the T-odd top partner mass are approximately 1.2 TeV, 1.3 TeV, and 1.4 TeV at the 2σconfidence level at 14 TeV LHC with an integrated luminosities of 30 fb^-1, 100 fb^-1, and 300 fb^-1, respectively. This lower limit can be increased to approximately 1.5(1.6) TeV if we used 1000(3000) fb^-1of the integrated luminosity.

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T-odd top partner pair production in the dilepton final states at the LHC in the littlest Higgs Model with T-parity

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T-odd top partner pair production in the dilepton final states at the LHC in the littlest Higgs Model with T-parity

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