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Darreres entrades:
2024-09-17
05:07
Discovery Opportunities with Gravitational Waves -- TASI 2024 Lecture Notes / Domcke, Valerie (CERN)
Recent advancements in gravitational wave astronomy hold the promise of a completely new way to explore our Universe [...]
CERN-TH-2024-152 ; arXiv:2409.08956.
- 31 p.
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2024-09-17
04:56
A collinear shower algorithm for NSL non-singlet fragmentation / van Beekveld, Melissa (NIKHEF, Amsterdam) ; Dasgupta, Mrinal (Manchester U.) ; El-Menoufi, Basem Kamal (Monash U.) ; Helliwell, Jack (Oxford U., Theor. Phys.) ; Monni, Pier Francesco (CERN) ; Salam, Gavin P. (Oxford U., Theor. Phys. ; Oxford U.)
We formulate a collinear partonic shower algorithm that achieves next-to-single-logarithmic (NSL, $\alpha_s^n L^{n-1}$) accuracy for collinear-sensitive non-singlet fragmentation observables. [...]
CERN-TH-2024-125 ; Nikhef 2024-013 ; OUTP-24-05P ; arXiv:2409.08316.
- 22 p.
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2024-09-14
04:38
Two-loop amplitudes for $\mathcal{O}(\alpha_s^2)$ corrections to $W\gamma\gamma$ production at the LHC / Badger, Simon (INFN, Turin) ; Hartanto, Heribertus Bayu (APCTP, Pohang ; POSTECH) ; Wu, Zihao (HIAS, UCAS, Hangzhou ; Unlisted, CN) ; Zhang, Yang (Hefei, CUST ; PCFT, Hefei) ; Zoia, Simone (PCFT, Hefei)
We present the two-loop helicity amplitudes contributing to the next-to-next-to-leading order QCD predictions for W-boson production in association with two photons at the Large Hadron Collider. [...]
CERN-TH-2024-146 ; USTC-ICTS/PCFT-24-29 ; arXiv:2409.08146.
- 31 p.
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2024-09-12
04:37
Theoretical implications for a new measurement of $K_L\to \pi^0 \ell\ell$ / D'Ambrosio, G. (Guglielmo Marconi U. ; U. Rome 2, Tor Vergata (main) ; INFN, Naples) ; Iyer, A.M. (Indian Inst. Tech., New Delhi ; IP2I, Lyon) ; Mahmoudi, F. (IP2I, Lyon ; CERN ; IUF, Paris) ; Neshatpour, S. (IP2I, Lyon)
Kaon physics is at an important experimental juncture with respect to the ongoing measurements of several observables. [...]
CERN-TH-2024-150 ; arXiv:2409.06545.
- 14 p.
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2024-09-12
04:15
Dielectric Haloscopes as Gravitational Wave Detectors / Domcke, Valerie (CERN) ; Ellis, Sebastian A.R. (Geneva U., Dept. Theor. Phys.) ; Kopp, Joachim (CERN ; Mainz U.)
We argue that dielectric haloscopes like MADMAX, originally designed for detecting axion dark matter, are also very promising gravitational wave detectors. [...]
CERN-TH-2024-151 ; arXiv:2409.06462.
- 8 p.
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2024-09-07
04:55
Polarized and un-polarized $\mathcal{R}_{K^*}$ in and beyond the SM / Ahmed, Ishtiaq (COMSATS, Islamabad ; CERN) ; Shafaq, Saba (Int. Islamic U., Islamabad) ; Aslam, M. Jamil (Quaid-i-Azam U.) ; Ishaq, Saadi (NUST, Islamabad)
The Standard Model (SM) is lepton flavor universal, and the recent measurements of lepton flavor universality in $B \to (K,K^*)\ell^{+}\ell^{-}$, for $\ell = \mu, \; e$, decays now lie close to the SM predictions. [...]
CERN-TH-2024-148 ; arXiv:2409.03388.
- 18 p.
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2024-08-30
06:38
R-matrices and Miura operators in 5d Chern-Simons theory / Ishtiaque, Nafiz (IHES, Bures-sur-Yvette) ; Jeong, Saebyeok (CERN) ; Zhou, Yehao (Tokyo U., IPMU)
We derive Miura operators for $W$- and $Y$-algebras from first principles as the expectation value of the intersection between a topological line defect and a holomorphic surface defect in 5-dimensional non-commutative $\mathfrak{gl}(1)$ Chern-Simons theory. [...]
CERN-TH-2024-147 ; arXiv:2408.15712.
- 14 p.
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2024-08-30
06:21
Probing Lorentz invariance with a high-energy neutrino flare / Bustamante, Mauricio (Bohr Inst.) ; Ellis, John (King's Coll. London ; CERN) ; Konoplich, Rostislav (Manhattan Coll., Riverdale ; New York U.) ; Sakharov, Alexander S. (Manhattan Coll., Riverdale ; CERN)
Time-of-flight measurements of high-energy astrophysical neutrinos can be used to probe Lorentz invariance, a pillar of modern physics. [...]
KCL-PH-TH/2024-22 ; CERN-TH-2024-056 ; arXiv:2408.15949.
- 16 p.
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2024-08-28
04:59
Can Baby Universe Absorption Explain Dark Energy? / Muralidharan, Varun ; Cline, James M.
It has been proposed that the accelerated expansion of the universe can be explained by the merging of our universe with baby universes, resulting in dark energy with a phantom-like equation of state. [...]
CERN-TH-2024-137 ; arXiv:2408.13306.
- 7 p.
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2024-08-28
04:54
Gravitational Waves from High Temperature Strings / Frey, Andrew R. (Winnipeg U.) ; Mahanta, Ratul (Winnipeg U.) ; Maharana, Anshuman (Harish-Chandra Res. Inst.) ; Quevedo, Fernando (Cambridge U., DAMTP ; CERN ; New York U., Abu Dhabi) ; Villa, Gonzalo (Cambridge U., DAMTP)
We study finite temperature effects in string cosmology and their potential gravitational wave signature. [...]
arXiv:2408.13803 ; CERN-TH-2024-108.
- 43 p.
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