Abstract
We study the phenomenology of a realistic version of the chaotic inflationary model, which can be fully and directly explored in particle physics experiments. The inflaton mixes with the Standard Model Higgs boson via the scalar potential, and no additional scales above the electroweak scale are present in the model. The inflaton-to-Higgs coupling is responsible for both reheating in the Early Universe and the inflaton production in particle collisions. We find the allowed range of the light inflaton mass, 270 MeV ≲ m χ ≲ 1.8 GeV, and discuss the ways to find the inflaton. The most promising are two-body kaon and B-meson decays with branching ratios of orders 10−9 and 10−6, respectively. The inflaton is unstable with the lifetime 10−9–10−10 s. The inflaton decays can be searched for in a beam-target experiment, where, depending on the inflaton mass, from several billions to several tenths of millions inflatons can be produced per year with modern high-intensity beams.
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References
D.H. Lyth and A. Riotto, Particle physics models of inflation and the cosmological density perturbation, Phys. Rept. 314 (1999) 1 [hep-ph/9807278] [SPIRES].
http://www-numi.fnal.gov/numwork/tdh/TDH_V2_3_DesignParameters.pdf.
http://proj-cngs.web.cern.ch/proj-cngs/Beam_Performance/BeamPerfor.htm.
U. Mahanta and S. Rakshit, Some low energy effects of a light stabilized radion in the Randall-Sundrum model, Phys. Lett. B 480 (2000) 176 [hep-ph/0002049] [SPIRES].
D.S. Gorbunov, Light sgoldstino: precision measurements versus collider searches, Nucl. Phys. B 602 (2001) 213 [hep-ph/0007325] [SPIRES].
D.S. Gorbunov and V.A. Rubakov, Kaon physics with light sgoldstinos and parity conservation, Phys. Rev. D 64 (2001) 054008 [hep-ph/0012033] [SPIRES].
M. Pospelov, Secluded U(1) below the weak scale, Phys. Rev. D 80 (2009) 095002 [arXiv:0811.1030] [SPIRES].
Particle Data Group collaboration, C. Amsler et al., Review of particle physics, Phys. Lett. B 667 (2008) 1 [SPIRES].
J.R. Ellis, M.K. Gaillard and D.V. Nanopoulos, A phenomenological profile of the Higgs boson, Nucl. Phys. B 106 (1976) 292 [SPIRES].
M.A. Shifman, A.I. Vainshtein, M.B. Voloshin and V.I. Zakharov, Low-energy theorems for Higgs boson couplings to photons, Sov. J. Nucl. Phys. 30 (1979) 711 [SPIRES].
J. Gasser and H. Leutwyler, Chiral perturbation theory: expansions in the mass of the strange quark, Nucl. Phys. B 250 (1985) 465 [SPIRES].
H. Leutwyler and M.A. Shifman, Light Higgs particle in decays of k and η mesons, Nucl. Phys. B 343 (1990) 369 [SPIRES].
J.F. Donoghue, J. Gasser and H. Leutwyler, The decay of a light Higgs boson, Nucl. Phys. B 343 (1990) 341 [SPIRES].
M. Shaposhnikov and I. Tkachev, The νMSM, inflation and dark matter, Phys. Lett. B 639 (2006) 414 [hep-ph/0604236] [SPIRES].
WMAP collaboration, E. Komatsu et al., Five-year Wilkinson Microwave Anisotropy Probe (WMAP) observations: cosmological interpretation, Astrophys. J. Suppl. 180 (2009) 330 [arXiv:0803.0547] [SPIRES].
A. Anisimov, Y. Bartocci and F.L. Bezrukov, Inflaton mass in the νMSM inflation, Phys. Lett. B 671 (2009) 211 [arXiv:0809.1097] [SPIRES].
S. Tsujikawa and B. Gumjudpai, Density perturbations in generalized Einstein scenarios and constraints on nonminimal couplings from the cosmic microwave background, Phys. Rev. D 69 (2004) 123523 [astro-ph/0402185] [SPIRES].
F.L. Bezrukov, Non-minimal coupling in inflation and inflating with the Higgs boson, arXiv:0810.3165 [SPIRES].
V.A. Kuzmin, V.A. Rubakov and M.E. Shaposhnikov, On the anomalous electroweak baryon number nonconservation in the early universe, Phys. Lett. B 155 (1985) 36 [SPIRES].
V.A. Rubakov and M.E. Shaposhnikov, Electroweak baryon number non-conservation in the early universe and in high-energy collisions, Usp. Fiz. Nauk 166 (1996) 493 [hep-ph/9603208] [SPIRES].
F. Bezrukov and M. Shaposhnikov, Standard model Higgs boson mass from inflation: two loop analysis, JHEP 07 (2009) 089 [arXiv:0904.1537] [SPIRES].
J.R. Ellis, M.K. Gaillard, D.V. Nanopoulos and C.T. Sachrajda, Is the mass of the Higgs boson about 10GeV?, Phys. Lett. B 83 (1979) 339 [SPIRES].
M. Spira, QCD effects in Higgs physics, Fortsch. Phys. 46 (1998) 203 [hep-ph/9705337] [SPIRES].
E787 collaboration, S.S. Adler et al., Further search for the decay \( {K^{+} } \to {\pi^{+} }\nu \bar \nu \) in the momentum region P π < 195MeV/c, Phys. Rev. D 70 (2004) 037102 [hep-ex/0403034] [SPIRES].
BNL-E949 collaboration, A.V. Artamonov et al., Study of the decay \( {K^{+} } \to {\pi^{+} },\nu \bar \nu \) in the momentum region 140 < P π < 199MeV/c, Phys. Rev. D 79 (2009) 092004 [arXiv:0903.0030] [SPIRES].
G.A. Kozlov, More remarks on search for a new light scalar boson, Chin. J. Phys. 34 (1996) 920 [SPIRES].
N. Paver and Riazuddin, Looking for a light Higgs boson in ϕ and ψ radiative decays, Phys. Lett. B 232 (1989) 524 [SPIRES].
S. Dawson, Higgs boson production in semileptonic K and π decays, Phys. Lett. B 222 (1989) 143 [SPIRES].
H.-Y. Cheng and H.-L. Yu, Are there really no experimental limits on a light Higgs boson from kaon decay?, Phys. Rev. D 40 (1989) 2980 [SPIRES].
R.S. Chivukula and A.V. Manohar, Limits on a light Higgs boson, Phys. Lett. B 207 (1988) 86 [SPIRES].
B. Grinstein, L.J. Hall and L. Randall, Do B meson decays exclude a light Higgs?, Phys. Lett. B 211 (1988) 363 [SPIRES].
BELLE collaboration, J.T. Wei et al., Measurement of the differential branching fraction and forward-backword asymmetry for B → K*ℓ + ℓ −, Phys. Rev. Lett. 103 (2009) 171801 [arXiv:0904.0770] [SPIRES].
B. Andersson, G. Gustafson, G. Ingelman and T. Sjöstrand, Parton fragmentation and string dynamics, Phys. Rept. 97 (1983) 31 [SPIRES].
M.G. Bowler, e+e− production of heavy quarks in the string model, Zeit. Phys. C 11 (1981) 169 [SPIRES].
C. Lourenco and H.K. Wohri, Heavy flavour hadro-production from fixed-target to collider energies, Phys. Rept. 433 (2006) 127 [hep-ph/0609101] [SPIRES].
H.M. Georgi, S.L. Glashow, M.E. Machacek and D.V. Nanopoulos, Higgs bosons from two gluon annihilation in proton proton collisions, Phys. Rev. Lett. 40 (1978) 692 [SPIRES].
S. Alekhin, K. Melnikov and F. Petriello, Fixed target Drell-Yan data and NNLO QCD fits of parton distribution functions, Phys. Rev. D 74 (2006) 054033 [hep-ph/0606237] [SPIRES].
CHARM collaboration, F. Bergsma et al., Search for axion like particle production in 400GeV proton-copper interactions, Phys. Lett. B 157 (1985) 458 [SPIRES].
T. Asaka, S. Blanchet and M. Shaposhnikov, The νMSM, dark matter and neutrino masses, Phys. Lett. B 631 (2005) 151 [hep-ph/0503065] [SPIRES].
T. Asaka and M. Shaposhnikov, The νMSM, dark matter and baryon asymmetry of the universe, Phys. Lett. B 620 (2005) 17 [hep-ph/0505013] [SPIRES].
M. Shaposhnikov, Is there a new physics between electroweak and Planck scales?, arXiv:0708.3550 [SPIRES].
T. Asaka, M. Shaposhnikov and A. Kusenko, Opening a new window for warm dark matter, Phys. Lett. B 638 (2006) 401 [hep-ph/0602150] [SPIRES].
D. Gorbunov, A. Khmelnitsky and V. Rubakov, Constraining sterile neutrino dark matter by phase-space density observations, JCAP 10 (2008) 041 [arXiv:0808.3910] [SPIRES].
A. Boyarsky, O. Ruchayskiy and D. Iakubovskyi, A lower bound on the mass of dark matter particles, JCAP 03 (2009) 005 [arXiv:0808.3902] [SPIRES].
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ArXiv ePrint: 0912.0390
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Bezrukov, F., Gorbunov, D. Light inflaton hunter’s guide. J. High Energ. Phys. 2010, 10 (2010). https://doi.org/10.1007/JHEP05(2010)010
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DOI: https://doi.org/10.1007/JHEP05(2010)010