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Possible new resonance from W_L W_L-hh interchannel coupling

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dc.contributor.authorDelgado López, Rafael
dc.contributor.authorDobado González, Antonio
dc.contributor.authorLlanes Estrada, Felipe José
dc.date.accessioned2023-06-18T06:45:47Z
dc.date.available2023-06-18T06:45:47Z
dc.date.issued2015-06-04
dc.description© 2015 American Physical Society. We thank J. R. Pelaez for discussion. A. D. and R. L. D. thank, respectively, the CERN TH-unit and the HEP group at the University of Southampton (NEXT institute) for their hospitality. This work was supported by the Spanish Grants No. UCM:910309, No. MINECO:FPA2014-53375-C2-1-P, No. MINECO:FPA2011-27853-C02-01, and No. BES-2012-056054 (R. L. D.).
dc.description.abstractWe propose and theoretically study a possible new resonance caused by strong coupling between the Higgs-Higgs and the W_LW_L (Z_L Z_L) scattering channels, without regard to the intensity of the elastic interaction in either channel at low energy (that could be weak as in the standard model). We expose this channel-coupling resonance from unitarity and dispersion relations encoded in the inverse amplitude method, applied to the electroweak chiral Lagrangian with a scalar Higgs boson.
dc.description.departmentDepto. de Física Teórica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO), España
dc.description.sponsorshipUniversidad Complutense de Madrid (UCM)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/31309
dc.identifier.doi10.1103/PhysRevLett.114.221803
dc.identifier.issn0031-9007
dc.identifier.officialurlhttp://dx.doi.org/10.1103/PhysRevLett.114.221803
dc.identifier.relatedurlhttp://journals.aps.org/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/24077
dc.issue.number22
dc.journal.titlePhysical review letters
dc.language.isoeng
dc.page.final221803_5
dc.page.initial221803_1
dc.publisherAmerican Physical Society
dc.relation.projectIDUCM (910309)
dc.relation.projectIDFPA2014-53375-C2-1-P
dc.relation.projectIDFPA2011-27853-C02-01
dc.relation.projectIDBES-2012-056054
dc.rights.accessRightsopen access
dc.subject.cdu53
dc.subject.keywordChiral perturbation-theory
dc.subject.keywordElectroweak parameters
dc.subject.keywordTechnicolor theories
dc.subject.keywordHiggs
dc.subject.keywordLagrangians
dc.subject.keywordBreaking
dc.subject.keywordSector
dc.subject.keywordBoson
dc.subject.keywordModel
dc.subject.ucmFísica (Física)
dc.subject.unesco22 Física
dc.titlePossible new resonance from W_L W_L-hh interchannel coupling
dc.typejournal article
dc.volume.number114
dcterms.references[1] S. Chatrchyan et al. (CMS Collaboration), Phys. Lett. B 716, 30 (2012); G. Aad et al. (ATLAS Collaboration), Phys. Lett. B 716, 1 (2012). [2] G. Aad et al. (ATLAS Collaboration), Phys. Rev. Lett. 113, 171801 (2014). Bounds are even higher, well into the TeV region, for new vector resonances; see G. Aad et al. (ATLAS Collaboration), Phys. Rev. D 91, 052007 (2015). [3] D. B. Kaplan and H. Georgi, Phys. Lett. 136B, 183 (1984). [4] K. Agashe, R. Contino, and A. Pomarol, Nucl. Phys. B719, 165 (2005); R. Contino, L. Da Rold, and A. Pomarol, Phys. Rev. D 75, 055014 (2007). [5] E. Halyo, Mod. Phys. Lett. A 08, 275 (1993); W.D. Goldberger, B. Grinstein, and W. Skiba, Phys. Rev. Lett. 100, 111802 (2008). [6] R. Alonso, M. B. Gavela, L. Merlo, S. Rigolin, and J. Yepes, Phys. Lett. B 722, 330 (2013). [7] G. Buchalla, O. Cata, and C. Krause, Nucl. Phys. B880, 552 (2014); G. Buchalla and O. Cata, J. High Energy Phys. 07 (2012) 101. [8] A. Longhitano, Phys. Rev. D 22, 1166 (1980); Nucl. Phys. B188, 118 (1981); A. Dobado, D. Espriu, and M. J. Herrero, Phys. Lett. B 255, 405 (1991); B. Holdom and J. Terning, Phys. Lett. B 247, 88 (1990); A. Dobado, D. Espriu, and M. J. Herrero, Phys. Lett. B 255, 405 (1991);M. Golden and L. Randall, Nucl. Phys. B361, 3 (1991). [9] J. M. Cornwall, D. N. Levin, and G. Tiktopoulos, Phys. Rev. D 10, 1145 (1974). [10] R. L. Delgado, A. Dobado, and F. J. Llanes-Estrada, J. High Energy Phys. 02 (2014) 121. [11] S. Weinberg, Physica (Amsterdam) 96A, 327 (1979); J. Gasser and H. Leutwyler, Ann. Phys. (N.Y.) 158, 142 (1984). [12] R. Contino, C. Grojean, M. Moretti, F. Piccinini, and R. Rattazzi, J. High Energy Phys. 05 (2010) 089. [13] R. L. Delgado, A. Dobado, and F. J. Llanes-Estrada, J. Phys. G 41, 025002 (2014). [14] D. Espriu, F. Mescia, and B. Yencho, Phys. Rev. D 88, 055002 (2013). [15] Similar proposals are known in hadron physics, e.g., the I ¼ 1=2 resonance oscillating between ϕN and K_Λ around 2 GeV in K. P. Khemchandani, H. Kaneko, H. Nagahiro, and A. Hosaka, Phys. Rev. D 83, 114041 (2011); see also E. Oset and A. Ramos, Eur. Phys. J. A 44, 445 (2010). [16] A. Dobado, M. J. Herrero, and T. N. Truong, Phys. Lett. B 235, 129 (1990); A. Dobado and J. R. Pelaez, Phys. Rev. D 47, 4883 (1993); 56, 3057 (1997). [17] J. R. Pelaez, J. A. Oller, and E. Oset, Nucl. Phys. A675, 92 (2000). [18] A. Gomez-Nicola and J. R. Pelaez, Phys. Rev. D 65, 054009 (2002). [19] D. Espriu and B. Yencho, Phys. Rev. D 87, 055017 (2013). [20] CMS Collaboration, Report No. CMS-PASHIG-14-009; ATLAS Collaboration, Report No. ATLAS-CONF-2014-009. [21] R. L. Delgado, A. Dobado, and F. J. Llanes-Estrada, Phys. Rev. D 91, 075017 (2015). [22] Outside particle physics, one can find strongly coupled channels with small elastic interaction. For example, C2 þ O2 → C2 þ O2 or CO þ CO → CO þ CO elastic scattering is negligible against the channel coupling C2 þ O2 → 2CO, a strong exothermic oxidation reaction, freeing almost 11 eV, driven by the large phase space. What is perhaps distinctive in our mechanism is that the channel-coupling probability is large, with no phase space advantage (all particles being approximately massless).
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relation.isAuthorOfPublication.latestForDiscovery16523fad-99a9-422c-9a8e-c949ccffadec

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