Disentangling the spin-parity of a resonance via the gold-plated decay mode

  • Searching for new resonances and finding out their properties is an essential part of any existing or future particle physics experiment. The nature of a new resonance is characterized by its spin, charge conjugation, parity, and its couplings with the existing particles of the Standard Model. If a new resonance is found in the four lepton final state produced via two intermediate Z bosons, the resonance could be a new heavy scalar or a Z' boson or even a higher spin particle. In such cases a step by step methodology as enunciated in this paper can be followed to determine the spin, parity and the coupling to two Z bosons of the parent particles, in a fully model-independent way. In our approach we show how three uni-angular distributions and a few experimentally measurable observables can conclusively tell us about the spin, parity as well as the couplings of the new resonance to two Z bosons. We have performed a numerical analysis to validate our approach and showed how the uni-angular observables can be used to disentangle the spin parity as well as the coupling of the resonance.
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  • [1] G. Aad et al (ATLAS Collaboration), Phys. Lett. B, 716: 1 (2012); arXiv:1207.7214 [hep-ex]
    [2] S. Chatrchyan et al (CMS Collaboration), Phys. Lett. B, 716: 30 (2012); arXiv:1207.7235 [hep-ex]
    [3] A. Menon, T. Modak, D. Sahoo, R. Sinha and H. Y. Cheng, Phys. Rev. D, 89: 095021 (2014): arXiv:1301.5404 [hep-ph]
    [4] C. A. Nelson, Phys. Rev. D, 30: 1937 (1984)
    [5] J. R. Dell'Aquila and C. A. Nelson, Phys. Rev. D, 33: 80 (1986)
    [6] C. A. Nelson, Phys. Rev. D, 37: 1220 (1988)
    [7] D. J. Miller, S. Y. Choi, B. Eberle, M. M. Muhlleitner and P. M. Zerwas, Phys. Lett B, 505: 149 (2001); hep-ph/0102023
    [8] S. Y. Choi, Measuring the spin of the Higgs bosons, in 10th International Conference on Supersymmetry, Edited by P. Nath, P. M. Zerwas, C. Grosche. Hamburg, DESY, 2002
    [9] S. Y. Choi, D. J. Miller, M. M. Muhlleitner and P. M. Zerwas, Phys. Lett. B, 553: 61 (2003); hep-ph/0210077
    [10] Y. Gao, A. V. Gritsan, Z. Guo, K. Melnikov, M. Schulze and N. V. Tran, Phys. Rev. D, 81: 075022 (2010); arXiv:1001.3396 [hep-ph]
    [11] M. Kramer, J. H. Kuhn, M. L. Stong and P. M. Zerwas, Z. Phys. C, 64: 21 (1994); hep-ph/9404280
    [12] C. P. Buszello, I. Fleck, P. Marquard and J. J. van der Bij, Eur. Phys. J. C, 32: 209 (2004); hep-ph/0212396
    [13] M. Bluj, CMS-NOTE-2006-094
    [14] O. J. P. Eboli, C. S. Fong, J. Gonzalez-Fraile and M. C. Gonzalez-Garcia, Phys. Rev. D, 83: 095014 (2011); arXiv:1102.3429 [hep-ph]
    [15] D. Stolarski and R. Vega-Morales, Phys. Rev. D, 86: 117504 (2012); arXiv:1208.4840 [hep-ph]
    [16] S. Bolognesi, Y. Gao, A. V. Gritsan, K. Melnikov, M. Schulze, N. V. Tran and A. Whitbeck, Phys. Rev. D, 86: 095031 (2012); arXiv:1208.4018 [hep-ph]
    [17] T. Han, J. D. Lykken and R.-J. Zhang, Phys. Rev. D, 59: 105006 (1999); hep-ph/9811350
    [18] J. S. Gainer, J. Lykken, K. T. Matchev, S. Mrenna and M. Park, arXiv:1403.4951 [hep-ph]
    [19] W.-Y. Keung, I. Low and J. Shu, Phys. Rev. Lett., 101: 091802 (2008); arXiv:0806.2864 [hep-ph]
    [20] P. Langacker, Rev. Mod. Phys., 81: 1199 (2009); arXiv:0801.1345 [hep-ph]
    [21] T. Flacke, A. Menon and Z. Sullivan, Phys. Rev. D, 86: 093006 (2012); arXiv:1207.4472 [hep-ph]
    [22] P. Avery, D. Bourilkov, M. Chen, T. Cheng, A. Drozdetskiy, J. S. Gainer, A. Korytov and K. T. Matchev et al, Phys. Rev. D, 87, (5): 055006 (2013); arXiv:1210.0896 [hep-ph]
    [23] J. S. Gainer, J. Lykken, K. T. Matchev, S. Mrenna and M. Park, Phys. Rev. Lett., 111: 041801 (2013); arXiv:1304.4936 [hep-ph]
    [24] M. Chen, T. Cheng, J. S. Gainer, A. Korytov, K. T. Matchev, P. Milenovic, G. Mitselmakher and M. Park et al, Phys. Rev. D, 89, (3): 034002 (2014); arXiv:1310.1397 [hep-ph]
    [25] K. Cheung and T.-C. Yuan, Phys. Rev. Lett., 108: 141602 (2012); arXiv:1112.4146 [hep-ph]
    [26] G. F. Giudice, R. Rattazzi and J. D. Wells, Nucl. Phys. B, 544: 3 (1999); hep-ph/9811291
    [27] K. Hagiwara, J. Kanzaki, Q. Li and K. Mawatari, Eur. Phys. J. C, 56: 435 (2008); arXiv:0805.2554 [hep-ph]
    [28] P. Artoisenet, P. de Aquino, F. Demartin, R. Frederix, S. Frixione, F. Maltoni, M. K. Mandal and P. Mathews et al, JHEP, 1311: 043 (2013); arXiv:1306.6464 [hep-ph]
    [29] V. Khachatryan et al [CMS Collaboration] , Phys. Rev. D, 91, (5): 052009 (2015); arXiv:1501.04198 [hep-ex]
    [30] J. Alwall, M. Herquet, F. Maltoni, O. Mattelaer and T. Stelzer, JHEP, 1106: 128 (2011); arXiv:1106.0522 [hep-ph]
    [31] T. Sjostrand, L. Lonnblad, S. Mrenna and P. Z. Skands, hep-ph/0308153.
    [32] J. de Favereau et al (DELPHES 3 Collaboration), JHEP, 1402: 057 (2014); arXiv:1307.6346 [hep-ex]
    [33] J. Pumplin, D. R. Stump, J. Huston, H. L. Lai, P. M. Nadolsky and W. K. Tung, JHEP, 0207: 012 (2002); arXiv:hep-ph/0201195
    [34] ATLAS Collaboration, Measurements of the properties of the Higgs-like boson in the four lepton decay channel with the ATLAS detector using 25 fb-1 of proton-proton collision dataATLAS-CONF-2013-013
    [35] G. Aad et al (ATLAS Collaboration), arXiv:0901.0512 [hep-ex]
    [36] M. Jacob and G. C. Wick, Annals Phys., 7: 404 (1959); Annals Phys, 281: 774 (2000)
    [37] Suh-Urk Chung, Spin formalisms, Updated Version, Brookhaven Nat. Lab., Upton, NY, 2008. This report is an updated version of CERN-71-08
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Tanmoy Modak, Dibyakrupa Sahoo, Rahul Sinha, Hai-Yang Cheng and Tzu-Chiang Yuan. Disentangling the spin-parity of a resonance via the gold-plated decay mode[J]. Chinese Physics C, 2016, 40(3): 033002. doi: 10.1088/1674-1137/40/3/033002
Tanmoy Modak, Dibyakrupa Sahoo, Rahul Sinha, Hai-Yang Cheng and Tzu-Chiang Yuan. Disentangling the spin-parity of a resonance via the gold-plated decay mode[J]. Chinese Physics C, 2016, 40(3): 033002.  doi: 10.1088/1674-1137/40/3/033002 shu
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Received: 2015-09-01
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    Supported in part by MOST (Taiwan)(103-2112-M-001-005 (HYC), 101-2112-M-001-005-MY3 (TCY))

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Disentangling the spin-parity of a resonance via the gold-plated decay mode

    Corresponding author: Tanmoy Modak,
    Corresponding author: Dibyakrupa Sahoo,
    Corresponding author: Rahul Sinha,
    Corresponding author: Hai-Yang Cheng,
    Corresponding author: Tzu-Chiang Yuan,
  • 1.  The Institute of Mathematical Sciences, Taramani, Chennai 600113
  • 2.  Institute of Physics, Academia Sinica, Taipei, 11529
Fund Project:  Supported in part by MOST (Taiwan)(103-2112-M-001-005 (HYC), 101-2112-M-001-005-MY3 (TCY))

Abstract: Searching for new resonances and finding out their properties is an essential part of any existing or future particle physics experiment. The nature of a new resonance is characterized by its spin, charge conjugation, parity, and its couplings with the existing particles of the Standard Model. If a new resonance is found in the four lepton final state produced via two intermediate Z bosons, the resonance could be a new heavy scalar or a Z' boson or even a higher spin particle. In such cases a step by step methodology as enunciated in this paper can be followed to determine the spin, parity and the coupling to two Z bosons of the parent particles, in a fully model-independent way. In our approach we show how three uni-angular distributions and a few experimentally measurable observables can conclusively tell us about the spin, parity as well as the couplings of the new resonance to two Z bosons. We have performed a numerical analysis to validate our approach and showed how the uni-angular observables can be used to disentangle the spin parity as well as the coupling of the resonance.

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