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Effective Field Theory of the Two Higgs Doublet Model
/ Banta, Ian (UC, Santa Barbara) ; Cohen, Timothy (CERN ; EPFL, Lausanne, LPTP ; Oregon U.) ; Craig, Nathaniel (UC, Santa Barbara ; Santa Barbara, KITP) ; Lu, Xiaochuan (UC, San Diego) ; Sutherland, Dave (Glasgow U.)
We revisit the effective field theory of the two Higgs doublet model at tree level. The introduction of a novel basis in the UV theory allows us to derive matching coefficients in the effective description that resum important contributions from the Higgs vacuum expectation value. [...]
arXiv:2304.09884; CERN-TH-2023-058.-
2023-06-23 - 39 p.
- Published in : JHEP 2306 (2023) 150
Fulltext: 2304.09884 - PDF; document - PDF;
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2.
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Performance of the MICE diagnostic system
/ Mice Collaboration
Muon beams of low emittance provide the basis for the intense, well-characterised neutrino beams of a neutrino factory and for multi-TeV lepton-antilepton collisions at a muon collider. The international Muon Ionization Cooling Experiment (MICE) has demonstrated the principle of ionization cooling, the technique by which it is proposed to reduce the phase-space volume occupied by the muon beam at such facilities. [...]
arXiv:2106.05813; RAL-P-2021-001.-
2021-08-16 - 27 p.
- Published in : JINST 16 (2021) P08046
Fulltext: 2106.05813 - PDF; fermilab-pub-21-284-ad-nd - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
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3.
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On Amplitudes and Field Redefinitions
/ Cohen, Timothy (CERN ; EPFL, Lausanne, LPTP ; Oregon U.) ; Lu, Xiaochuan (UC, San Diego) ; Sutherland, Dave (Glasgow U.)
We derive an off-shell recursion relation for correlators that holds at all loop orders. This allows us to prove how generalized amplitudes transform under generic field redefinitions, starting from an assumed behavior of the one-particle-irreducible effective action. [...]
arXiv:2312.06748; CERN-TH-2023-233.-
2024-06-24 - 50 p.
- Published in : JHEP 2406 (2024) 149
Fulltext: 2312.06748 - PDF; document - PDF;
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4.
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SCExAO/MEC and CHARIS Discovery of a Low-mass, 6 au Separation Companion to HIP 109427 Using Stochastic Speckle Discrimination and High-contrast Spectroscopy
/ Steiger, Sarah (UC, Santa Barbara) ; Currie, Thayne (Subaru Telescope ; NASA, Ames ; Eureka Sci.) ; Brandt, Timothy D. (UC, Santa Barbara) ; Guyon, Olivier (Subaru Telescope ; Arizona State U.) ; Kuzuhara, Masayuki (Natl. Astron. Observ. of Japan) ; Chilcote, Jeffrey (Indiana U., South Bend) ; Groff, Tyler D. (NASA, Goddard) ; Lozi, Julien (Subaru Telescope) ; Walter, Alexander B. (Caltech, JPL) ; Fruitwala, Neelay (UC, Santa Barbara) et al.
We report the direct imaging discovery of a low-mass companion to the nearby accelerating A star, HIP 109427, with the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument coupled with the MKID Exoplanet Camera (MEC) and CHARIS integral field spectrograph. CHARIS data reduced with reference star PSF subtraction yield 1.1-2.4 $\mu$m spectra. [...]
arXiv:2103.06898.-
2021-07-06 - 11 p.
- Published in : Astron. J. 162 (2021) 44
Fulltext: PDF;
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6.
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Multifield Positivity Bounds for Inflation
/ Freytsis, Marat (Rutgers U., Piscataway) ; Kumar, Soubhik (UC, Berkeley ; LBL, Berkeley) ; Remmen, Grant N. (Santa Barbara, KITP ; UC, Santa Barbara) ; Rodd, Nicholas L. (CERN)
Positivity bounds represent nontrivial limitations on effective field theories (EFTs) if those EFTs are to be completed into a Lorentz-invariant, causal, local, and unitary framework. While such positivity bounds have been applied in a wide array of physical contexts to obtain useful constraints, their application to inflationary EFTs is subtle since Lorentz invariance is spontaneously broken during cosmic inflation. [...]
arXiv:2210.10791; CERN-TH-2022-160.-
2023-09-07 - 43 p.
- Published in : JHEP 2309 (2023) 041
Fulltext: document - PDF; 2210.10791 - PDF;
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7.
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Spinning Sum Rules for the Dimension-Six SMEFT
/ Remmen, Grant N. (Santa Barbara, KITP ; UC, Santa Barbara) ; Rodd, Nicholas L. (CERN)
We construct new dispersive sum rules for the effective field theory of the standard model at mass dimension six. These spinning sum rules encode information about the spin of UV states: the sign of the IR Wilson coefficients carries a memory of the dominant spin in the UV completion. [...]
arXiv:2206.13524; CERN-TH-2022-105.-
2022-09-05 - 51 p.
- Published in : JHEP 09 (2022) 030
Fulltext: 2206.13524 - PDF; document - PDF;
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8.
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Dark Sectors 2016 Workshop: Community Report
/ Alexander, Jim (Cornell U., Phys. Dept.) ; Battaglieri, Marco (INFN, Genoa) ; Echenard, Bertrand (Caltech) ; Essig, Rouven (SUNY, Stony Brook) ; Graham, Matthew (SLAC) ; Izaguirre, Eder (Perimeter Inst. Theor. Phys.) ; Jaros, John (SLAC) ; Krnjaic, Gordan (Fermilab) ; Mardon, Jeremy (Stanford U., Phys. Dept.) ; Morrissey, David (TRIUMF) et al.
This report, based on the Dark Sectors workshop at SLAC in April 2016, summarizes the scientific importance of searches for dark sector dark matter and forces at masses beneath the weak-scale, the status of this broad international field, the important milestones motivating future exploration, and promising experimental opportunities to reach these milestones over the next 5-10 years..
arXiv:1608.08632 ; FERMILAB-CONF-16-421.
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2016. - 66 p.
Fermilab Library Server (fulltext available) - Full text - Fulltext
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9.
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The double copy: Bremsstrahlung and accelerating black holes
/ Luna, Andrés (Glasgow U.) ; Monteiro, Ricardo (CERN) ; Nicholson, Isobel (Edinburgh U. ; U. Edinburgh, Higgs Ctr. Theor. Phys.) ; O'Connell, Donal (Edinburgh U. ; Santa Barbara, KITP ; U. Edinburgh, Higgs Ctr. Theor. Phys.) ; White, Chris D. (Glasgow U.)
Advances in our understanding of perturbation theory suggest the existence of a correspondence between classical general relativity and Yang-Mills theory. A concrete example of this correspondence, which is known as the double copy, was recently introduced for the case of stationary Kerr-Schild spacetimes. [...]
arXiv:1603.05737; CERN-TH-2016-027; EDINBURGH-2016-02; CERN-TH-2016-027; EDINBURGH 2016-02.-
Geneva : CERN, 2016-06-06 - 22 p.
- Published in : JHEP 06 (2016) 023
Article from SCOAP3: PDF; Fulltext: PDF; Springer Open Access article: PDF; External link: Preprint
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10.
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