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Roadmap The centre is designed to cover, during its life-time, strategic areas of research orbiting around the “Origin of Mass” problem which is the “trait d’union” connecting them: • Electroweak Symmetry Breaking/Model Building • Flavour and CP Physics • Strong Interactions In the following we review the research we have been involved in during the reporting period. We plan to further extend our line or research below for the coming reporting year according to the original work-plan and milestones. Two staff members per research area will be the primary investigators according to their expertise. We expect to involve two postdocs per area of research. There is sufficient flexibility within this research structure to allow for the young researchers to pick the topic(s) which best suits their interests. Within each research project introduced below we present the methodological approach we will employ to achieve our goals. Dynamical Electroweak Symmetry Breaking A number of possible generalizations of the SM have been conceived. Such extensions are introduced on the basis of one or more guiding principles or prejudices. We will introduce below only the SM extensions on which we have worked and can achieve in a short period definite and seminal results. One of the intriguing options for explaining some of the puzzling features of the SM of particle physics is to assume that a new force acts at the Fermi scale. This new force, commonly called Technicolor – the high energy equivalent of ordinary superconductivity – leads to a natural explanation of the origin of the Fermi scale per se as well as of the origin of mass of the intermediate vector boson responsible, for example, for the slow burning of our Sun. These theories are useful for constructing models able to generate the Fermi scale dynamically while passing the LEP precision measurements. Our extensions, termed Minimal Walking Technicolor, are currently being studied for potential discovery at the LHC. These theories require new strong dynamics very different from the strong nuclear force QCD. Natural Fourth Families Imagine to discover a new fourth family of leptons at the Large Hadron Collider (LHC) but no signs of an associated fourth family of quarks. What would that imply? An intriguing possibility is that the new fermions needed to compensate for the new leptons gauge anomalies simultaneously address the big hierarchy problem of the Standard Model. A natural way to accomplish such a scenario is to have the Higgs itself be composite of these new fermions. CP³-Black book 11
This is the setup we investigated using as a template Minimal Walking Technicolor. We analyzed a general heavy neutrino mass structure with and without mixing with the Standard Model families. We also analyzed the LHC potential to observe the fourth lepton family in tandem with the new composite Higgs dynamics. We finally introduced a model uniting the fourth lepton family and the technifermion sector at higher energies. We also considered the possibility of non-sequential generation(s) of Standard Model -like matter as a consequence of cancellation of global and gauge anomalies due to a new strongly interacting sector responsible for the electroweak symmetry breaking. [Fourth Lepton Family is Natural in Technicolor. Mads T. Frandsen, (Southern Denmark U., CP3-Origins & Oxford U., Theor. Phys.) , Isabella Masina, (Ferrara U. & INFN, Ferrara & Southern Denmark U., CP3-Origins) , Francesco Sannino, (Southern Denmark U., CP3-Origins) . May 2009. (Received Feb 1, 2010). 39pp. Published in Phys.Rev.D81:035010,2010. The Next Generation. Oleg Antipin, Matti Heikinheimo, Kimmo Tuominen, . CP3-ORIGINS-2010-04, Feb 2010. 17pp. Submitted for publication. e-Print: arXiv:1002.1872 ] Unnatural origin of Fermion Masses We explored the scenario in which the breaking of the electroweak symmetry is due to the simultaneous presence and interplay of a dynamical sector and an unnatural elementary Higgs. We introduced a low energy effective Lagrangian and constrained the various couplings via direct search limits and electroweak and flavor precision tests. We found that the model we studied is a viable model of dynamical breaking of the electroweak symmetry. [Unnatural Origin of Fermion Masses for Technicolor. Matti Antola, (Helsinki Inst. of Phys.) , Matti Heikinheimo, (Jyvaskyla U. & Helsinki Inst. of Phys.) , Francesco Sannino, (Southern Denmark U., CP3-Origins) , Kimmo Tuominen, (Southern Denmark U., CP3-Origins & Helsinki Inst. of Phys.) . Oct 2009. 20pp. e-Print: arXiv:0910.3681 [hep-ph], Accepted for publication in the Journal of High Energy Physics, JHEP] Minimal Super Technicolor: A Novel String Theory Connection We introduced novel extensions of the Standard Model featuring a supersymmetric technicolor sector (supertechnicolor). As the first minimal conformal supertechnicolor model we considered N=4 Super Yang-Mills which breaks to N=1 via the electroweak interactions. This is a well defined, economical and calculable extension of the SM involving the smallest number of fields. It constitutes an explicit example of a natural superconformal extension of the Standard Model featuring a well defined connection to string theory. It allows to interpolate, depending on how we break the underlying supersymmetry, between unparticle physics and Minimal Walking Technicolor. We considered also other N =1 extensions of the Minimal Walking Technicolor model. The new models allow all the standard model matter fields to acquire a mass. [Minimal Super Technicolor. M. Antola, S. Di Chiara, F. Sannino, K. Tuominen, . CP3-ORIGINS:-2010-01, Jan 2010. 23pp. e-Print: arXiv:1001.2040 [hep-ph], Submitted for publication.] iTIMP as Dark Matter We suggested that a weak isotriplet composite scalar possessing an unbroken U(1) global symmetry naturally arises in technicolor models leading to an interesting type of dark matter candidate: the iTIMP. We proposed explicit models of the iTIMP, studied earth based constraints and suggested possible collider signals. CP³-Black book 12
Page 1 and 2: Black book Uncovering the origins
Page 4 and 5: Table of Contents The Revolutions t
Page 6 and 7: The Revolutions to Come Mankind’s
Page 8 and 9: Unification of the Forces: Why do w
Page 10 and 11: Advisory Board To insure the maximu
Page 12 and 13: • Lisa Carloni (Lund University)
Page 14 and 15: Professor Paul Hoyer from Helsinki
Page 18 and 19: [iTIMP: isotriplet Technicolor Inte
Page 20 and 21: CP violation is also relevant for c
Page 22 and 23: Holographic Conformal Window We pro
Page 24 and 25: Milestones Scientific The roadmap c
Page 26 and 27: • Be able to acquire the required
Page 28 and 29: CP 3 -Origins Poster Collection PhD
Page 30 and 31: C P 3 - O r i g i n s Origins of Da
Page 32 and 33: Origin of Mass 2010 Understanding w
Page 34 and 35: Personnel Overview 01.09-31.12.2009
Page 36 and 37: Appendix Appendix A: External Relat
Page 38 and 39: Appendix B: Conferences Please outl
Page 40 and 41: Appendix C: Educational activities
Page 42 and 43: Appendix E: External funding Please
Page 44 and 45: Appendix I: Publications The follow
Page 46 and 47: Peer-reviewed proceedings Num ber Y
Page 48 and 49: Research Staff From left to right:

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