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Anomaly Cancellation in Effective Field Theories From the Covariant Derivative Expansion
/ Cohen, Timothy (CERN ; EPFL, Lausanne, LPTP ; Oregon U.) ; Lu, Xiaochuan (Oregon U. ; UC, San Diego) ; Zhang, Zhengkang (UC, Santa Barbara)
We extend our recently-proposed formalism for calculating anomalies of global and gauge symmetries using the Covariant Derivative Expansion to include a general class of operators that can appear in relativistic Effective Field Theories (EFTs). This allows us to prove that EFT operators involving general scalar, vector, and tensor couplings to fermion bilinears only give rise to irrelevant anomalies, which can be removed by an appropriate choice of counterterms, thereby confirming the absence of new constraints from anomaly cancellation on the Standard Model EFT..
arXiv:2301.00827; CERN-TH-2023-002.-
2023-09-01 - 21 p.
- Published in : Phys. Rev. D 108 (2023) 056027
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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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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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Detection of Early-Universe Gravitational Wave Signatures and Fundamental Physics
/ Caldwell, Robert (Dartmouth Coll.) ; Cui, Yanou (UC, Riverside) ; Guo, Huai-Ke (U. Utah, Salt Lake City) ; Mandic, Vuk (Minnesota U.) ; Mariotti, Alberto (Brussels U., IIHE) ; No, Jose Miguel (Madrid, IFT) ; Ramsey-Musolf, Michael J. (Shanghai Jiao Tong U.) ; Sakellariadou, Mairi (King's Coll. London) ; Sinha, Kuver (U. Oklahoma, Norman) ; Wang, Lian-Tao (Chicago U.) et al.
Detection of a gravitational-wave signal of non-astrophysical origin would be a landmark discovery, potentially providing a significant clue to some of our most basic, big-picture scientific questions about the Universe. In this white paper, we survey the leading early-Universe mechanisms that may produce a detectable signal -- including inflation, phase transitions, topological defects, as well as primordial black holes -- and highlight the connections to fundamental physics. [...]
arXiv:2203.07972.-
2022-11-30 - 67 p.
Fulltext: 2203.07972 - PDF; document - PDF; External link: eConf
In : 2021 Snowmass Summer Study, Seattle, WA, United States, 11 - 20 July 2021, pp.
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Science and Project Planning for the Forward Physics Facility in Preparation for the 2024-2026 European Particle Physics Strategy Update
/ Adhikary, Jyotismita (NCBJ, Warsaw) ; Anchordoqui, Luis A. (Lehman Coll.) ; Ariga, Akitaka (Bern U., LHEP ; Chiba U.) ; Ariga, Tomoko (Kyushu U., Fukuoka (main)) ; Barr, Alan J. (U. Oxford (main)) ; Batell, Brian (U. Pittsburgh (main)) ; Bian, Jianming (UC, Irvine) ; Boyd, Jamie (CERN) ; Citron, Matthew (UC, Davis) ; De Roeck, Albert (CERN) et al.
The recent direct detection of neutrinos at the LHC has opened a new window on high-energy particle physics and highlighted the potential of forward physics for groundbreaking discoveries. [...]
arXiv:2411.04175.
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Implications for First-Order Cosmological Phase Transitions from the Third LIGO-Virgo Observing Run
/ Romero, Alba (Barcelona, IFAE) ; Martinovic, Katarina (King's Coll. London) ; Callister, Thomas A. (Flatiron Inst., New York) ; Guo, Huai-Ke (Oklahoma U.) ; Martínez, Mario (Barcelona, IFAE ; ICREA, Barcelona) ; Sakellariadou, Mairi (King's Coll. London ; CERN) ; Yang, Feng-Wei (Utah U.) ; Zhao, Yue (Utah U.)
We place constrains on the normalised energy density in gravitational waves from first-order strong phase transitions using data from Advanced LIGO and Virgo's first, second and third observing runs. First, adopting a broken power law model, we place $95 \%$ confidence level upper limits simultaneously on the gravitational-wave energy density at 25 Hz from unresolved compact binary mergers, $\Omega_{\rm cbc} < 5.9 \times 10^{-9}$, and strong first-order phase transitions, $\Omega_{\rm bpl} < 2.8 \times 10^{-9}$. [...]
arXiv:2102.01714.-
2021-04-17 - 7 p.
- Published in : Phys. Rev. Lett. 126 (2021) 151301
Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from publisher: PDF;
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Precision calculation of dark radiation from spinning primordial black holes and early matter-dominated eras
/ Arbey, Alexandre (IP2I, Lyon ; CERN ; IUF, Paris) ; Auffinger, Jérémy (IP2I, Lyon) ; Sandick, Pearl (Utah U.) ; Shams Es Haghi, Barmak (Utah U.) ; Sinha, Kuver (Oklahoma U.)
We present precision calculations of dark radiation in the form of gravitons coming from Hawking evaporation of spinning primordial black holes (PBHs) in the early Universe. Our calculation incorporates a careful treatment of extended spin distributions of a population of PBHs, the PBH reheating temperature, and the number of relativistic degrees of freedom. [...]
arXiv:2104.04051; CERN-TH-2021-049.-
2021-06-15 - 20 p.
- Published in : Phys. Rev. D 103 (2021) 123549
Fulltext: PDF; Fulltext from publisher: PDF;
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