Abstract
We evaluate all two-body decay modes of the gluino, in the Minimal Supersymmetric Standard Model with complex parameters (cMSSM). This constitutes an important step in the cascade decays of SUSY particles at the LHC. The evaluation is based on a full one-loop calculation of all two-body decay channels, also including hard QED and QCD radiation. The dependence of the gluino decay to a scalar quark and a quark on the relevant cMSSM parameters is analyzed numerically. We find sizable contributions to the decay widths and branching ratios. They are, roughly of \(\mathcal{O}({\pm 5\%)}\), but can go up to ±10% or higher, where the pure SUSY QCD contributions alone can give an insufficient approximation to the full one-loop result. Therefore the full corrections are important for the correct interpretation of gluino decays at the LHC. The results will be implemented into the Fortran code FeynHiggs.
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References
H.P. Nilles, Phys. Rep. 110, 1 (1984)
H.E. Haber, G.L. Kane, Phys. Rep. 117, 75 (1985)
R. Barbieri, Riv. Nuovo Cimento 11, 1 (1988)
G. Aad et al. (The ATLAS Collaboration), arXiv:0901.0512
G. Bayatian et al. (CMS Collaboration), J. Phys. G 34, 995 (2007)
O. Buchmueller et al., Eur. Phys. J. C 64, 391 (2009). arXiv:0907.5568 [hep-ph]
W. Beenakker, R. Höpker, P. Zerwas, Phys. Lett. B 378, 159 (1996). arXiv:hep-ph/9602378
M. Mühlleitner, A. Djouadi, Y. Mambrini, Comput. Phys. Commun. 168, 46 (2005). arXiv:hep-ph/0311167
S. Choi, M. Drees, A. Freitas, P. Zerwas, Phys. Rev. D 78, 095007 (2008). arXiv:0808.2410 [hep-ph]
M. Krämer, E. Popenda, M. Spira, P. Zerwas, Phys. Rev. D 80, 055002 (2009). arXiv:0902.3795 [hep-ph]
A. De Roeck et al., Eur. Phys. J. C 66, 525 (2010). arXiv:0909.3240 [hep-ph]
S. Heinemeyer, W. Hollik, G. Weiglein, Comput. Phys. Commun. 124, 76 (2000). arXiv:hep-ph/9812320, see www.feynhiggs.de
S. Heinemeyer, W. Hollik, G. Weiglein, Eur. Phys. J. C 9, 343 (1999). arXiv:hep-ph/9812472
G. Degrassi, S. Heinemeyer, W. Hollik, P. Slavich, G. Weiglein, Eur. Phys. J. C 28, 133 (2003). arXiv:hep-ph/0212020
M. Frank, T. Hahn, S. Heinemeyer, W. Hollik, R. Rzehak, G. Weiglein, J. High Energy Phys. 02, 047 (2007). arXiv:hep-ph/0611326
T. Fritzsche, PhD Thesis (Cuvillier Verlag, Göttingen, 2005). ISBN:3-86537-577-4
S. Heinemeyer, H. Rzehak, C. Schappacher, Phys. Rev. D 82, 075010 (2010). arXiv:1007.0689 [hep-ph]
S. Heinemeyer, H. Rzehak, C. Schappacher, PoS C CHARGED2010, 039 (2010). arXiv:1012.4572 [hep-ph]
T. Fritzsche, S. Heinemeyer, H. Rzehak, C. Schappacher, arXiv:1111.7289 [hep-ph]
A. Fowler, G. Weiglein, J. High Energy Phys. 1001, 108 (2010). arXiv:0909.5165 [hep-ph]
A. Denner, Fortschr. Phys. 41, 307 (1993). arXiv:0709.1075 [hep-ph]
K. Nakamura et al. (Particle Data Group), J. Phys. G 37, 075021 (2010)
K. Chetyrkin, J. Kühn, M. Steinhauser, Comput. Phys. Commun. 133, 43 (2000). arXiv:hep-ph/0004189
R. Hempfling, Phys. Rev. D 49, 6168 (1994)
L. Hall, R. Rattazzi, U. Sarid, Phys. Rev. D 50, 7048 (1994). arXiv:hep-ph/9306309
M. Carena, M. Olechowski, S. Pokorski, C. Wagner, Nucl. Phys. B 426, 269 (1994). arXiv:hep-ph/9402253
M. Carena, D. Garcia, U. Nierste, C. Wagner, Nucl. Phys. B 577, 577 (2000). arXiv:hep-ph/9912516
R. Harlander, L. Mihaila, M. Steinhauser, Phys. Rev. D 72, 095009 (2005). arXiv:hep-ph/0509048
R. Peccei, H. Quinn, Phys. Rev. Lett. 38, 1440 (1977)
R. Peccei, H. Quinn, Phys. Rev. D 16, 1791 (1977)
S. Dimopoulos, S. Thomas, Nucl. Phys. B 465, 23 (1996). arXiv:hep-ph/9510220
J. Küblbeck, M. Böhm, A. Denner, Comput. Phys. Commun. 60, 165 (1990)
T. Hahn, Comput. Phys. Commun. 140, 418 (2001). arXiv:hep-ph/0012260
T. Hahn, C. Schappacher, Comput. Phys. Commun. 143, 54 (2002). arXiv:hep-ph/0105349
The program, the user’s guide and the MSSM model files are available via www.feynarts.de
S. Heinemeyer, F.v.d. Pahlen, C. Schappacher, arXiv:1112.0760 [hep-ph]
T. Hahn, M. Pérez-Victoria, Comput. Phys. Commun. 118, 153 (1999). arXiv:hep-ph/9807565
F. del Aguila, A. Culatti, R. Munoz Tapia, M. Perez-Victoria, Nucl. Phys. B 537, 561 (1999). arXiv:hep-ph/9806451
W. Siegel, Phys. Lett. B 84, 193 (1979)
D. Capper, D. Jones, P. van Nieuwenhuizen, Nucl. Phys. B 167, 479 (1980)
D. Stöckinger, J. High Energy Phys. 0503, 076 (2005). arXiv:hep-ph/0503129
W. Hollik, D. Stöckinger, Phys. Lett. B 634, 63 (2006). arXiv:hep-ph/0509298
The couplings can be found in the files MSSM.ps.gz and MSSMQCD.ps.gz as part of the FeynArts package [32, 33, 34, 35]
LEP Higgs working group, Phys. Lett. B 565, 61 (2003). arXiv:hep-ex/0306033
LEP Higgs working group, Eur. Phys. J. C 47, 547 (2006). arXiv:hep-ex/0602042
V. Khachatryan et al. (CMS Collaboration), arXiv:1101.1628 [hep-ex]
http://cdsweb.cern.ch/record/1342547/files/SUS-11-001-pas.pdf
http://cdsweb.cern.ch/record/1343076/files/SUS-10-005-pas.pdf
G. Aad et al. (ATLAS Collaboration), arXiv:1102.2357 [hep-ex], arXiv:1102.5290 [hep-ex]
J. Frere, D. Jones, S. Raby, Nucl. Phys. B 222, 11 (1983)
M. Claudson, L. Hall, I. Hinchliffe, Nucl. Phys. B 228, 501 (1983)
C. Kounnas, A. Lahanas, D. Nanopoulos, M. Quiros, Nucl. Phys. B 236, 438 (1984)
J. Gunion, H. Haber, M. Sher, Nucl. Phys. B 306, 1 (1988)
J. Casas, A. Lleyda, C. Munoz, Nucl. Phys. B 471, 3 (1996). arXiv:hep-ph/9507294
P. Langacker, N. Polonsky, Phys. Rev. D 50, 2199 (1994). arXiv:hep-ph/9403306
A. Strumia, Nucl. Phys. B 482, 24 (1996). arXiv:hep-ph/9604417
M. Dugan, B. Grinstein, L. Hall, Nucl. Phys. B 255, 413 (1985)
W. Hollik, J. Illana, S. Rigolin, D. Stöckinger, Phys. Lett. B 416, 345 (1998). arXiv:hep-ph/9707437
W. Hollik, J. Illana, S. Rigolin, D. Stöckinger, Phys. Lett. B 425, 322 (1998). arXiv:hep-ph/9711322
D. Demir, O. Lebedev, K. Olive, M. Pospelov, A. Ritz, Nucl. Phys. B 680, 339 (2004). arXiv:hep-ph/0311314
D. Chang, W. Keung, A. Pilaftsis, Phys. Rev. Lett. 82, 900 (1999). arXiv:hep-ph/9811202. [Erratum-ibid. 83, 3972 (1999)]
A. Pilaftsis, Phys. Lett. B 471, 174 (1999). arXiv:hep-ph/9909485
O. Lebedev, K. Olive, M. Pospelov, A. Ritz, Phys. Rev. D 70, 016003 (2004). arXiv:hep-ph/0402023
S. Abel, S. Khalil, O. Lebedev, Nucl. Phys. B 606, 151 (2001). arXiv:hep-ph/0103320
Y. Li, S. Profumo, M. Ramsey-Musolf, J. High Energy Phys. 1008, 062 (2010). arXiv:1006.1440 [hep-ph]
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Heinemeyer, S., Schappacher, C. Gluino decays in the complex MSSM: a full one-loop analysis. Eur. Phys. J. C 72, 1905 (2012). https://doi.org/10.1140/epjc/s10052-012-1905-5
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DOI: https://doi.org/10.1140/epjc/s10052-012-1905-5