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2024-09-26
06:53
Searches for long-lived dark photons at proton accelerator experiments / Kyselov, Yehor ; Ovchynnikov, Maksym
A systematic and unified study of the ability of lifetime frontier experiments to explore the parameter space of hypothetical long-lived particles is one of the main steps in defining their parameter space. [...]
CERN-TH-2024-157 ; arXiv:2409.11096. -
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2024-09-26
06:51
How new physics affects primordial neutrinos decoupling: Direct Simulation Monte Carlo approach / Ovchynnikov, Maksym ; Syvolap, Vsevolod
Cosmological observations from Big Bang Nucleosynthesis and the Cosmic Microwave Background (CMB) offer crucial insights into the Early Universe, enabling us to trace its evolution back to lifetimes as short as 0.01 seconds. [...]
CERN-TH-2024-156 ; arXiv:2409.07378. -
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2024-09-26
06:44
Primordial neutrinos and new physics: novel approach to solving neutrino Boltzmann equation / Ovchynnikov, Maksym ; Syvolap, Vsevolod
Understanding how hypothetical new physics influences primordial neutrinos is essential in light of interpreting past and ongoing CMB observations. [...]
CERN-TH-2024-159 ; arXiv:2409.15129. -
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2024-09-25
04:15
Plausible constraints and inflationary production for dark photons / Cline, James M. (McGill U. ; CERN) ; Herrera, Gonzalo (CERN ; Virginia Tech.)
Generic constraints on dark photons are generally presented assuming they have Stueckelberg masses. [...]
CERN-TH-2024-154 ; arXiv:2409.13818. - 5 p.
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2024-09-25
04:15
Kolya: an open-source package for inclusive semileptonic $B$ decays / Fael, Matteo (CERN) ; Milutin, Ilija S. (Siegen U.) ; Vos, K. Keri (Maastricht U. ; NIKHEF, Amsterdam)
We introduce the code kolya, an open-source tool for phenomenological analyses of inclusive semileptonic $B$ meson decays. [...]
Nikhef 2023-022 ; CERN-TH-2024-155 ; SI-HEP-2024-20 ; P3H-24-065 ; arXiv:2409.15007. - 37 p.
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2024-09-21
04:03
Shaping Dark Photon Spectral Distortions / Arsenadze, Giorgi (New York U., CCPP) ; Caputo, Andrea (CERN) ; Gan, Xucheng (New York U., CCPP ; DESY) ; Liu, Hongwan (Boston U. ; Chicago U., KICP ; Fermilab) ; Ruderman, Joshua T. (New York U., CCPP)
The cosmic microwave background (CMB) spectrum is an extraordinary tool for exploring physics beyond the Standard Model. [...]
CERN-TH-2024-153 ; DESY-24-139 ; arXiv:2409.12940. - 18 p.
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2024-09-18
05:31
Light Right-handed Smuons at the LHC: Natural Dark Matter and $g_{\mu}-2$ in an Unexplored Realm of the pMSSM / Yin, Xiangwei (Chongqing U.) ; Li, Tianjun (Beijing, Inst. Theor. Phys. ; Beijing, GUCAS ; Henan Normal U.) ; Maxin, James A. (Louisiana State U.) ; Nanopoulos, Dimitri V. (Texas A-M ; Athens Academy ; Athens U. ; HARC, Woodlands ; CERN)
We introduce an in-depth study of an unprobed pMSSM region offering a natural solution to dark matter. [...]
CERN-TH-2024-149 ; arXiv:2409.09474. - 10 p.
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2024-09-18
05:25
Cambridge Lectures on The Standard Model / Quevedo, Fernando (Cambridge U., DAMTP ; CERN ; New York U., Abu Dhabi) ; Schachner, Andreas (Cambridge U., DAMTP ; Munich U., ASC ; Cornell U.)
These lecture notes cover the Standard Model (SM) course for Part III of the Cambridge Mathematical Tripos, taught during the years 2020-2023. [...]
CERN-TH-2024-106 ; arXiv:2409.09211. - 255 p.
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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. ; U. Oxford (main))
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. - 36 p.
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