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2024-06-11
04:55
ALP-ine quests at the LHC: hunting axion-like particles via peaks and dips in $t \bar{t}$ production / Anuar, Afiq (CERN) ; Biekötter, Anke (Mainz U., Inst. Phys. ; U. Mainz, PRISMA) ; Biekötter, Thomas (KIT, Karlsruhe, TP) ; Grohsjean, Alexander (Hamburg U.) ; Heinemeyer, Sven (Madrid, IFT) ; Jeppe, Laurids (DESY) ; Schwanenberger, Christian (Hamburg U. ; DESY) ; Weiglein, Georg (DESY ; Hamburg U., Inst. Theor. Phys. II)
We present an analysis of the sensitivity of current and future LHC searches for new spin-0 particles in top-anti-top-quark ($t\bar{t}$) final states, focusing on generic axion-like particles (ALPs) that are coupled to top quarks and gluons. [...]
DESY-24-059 ; IFT-UAM/CSIC-24-042 ; KA-TP-06-2024 ; MITP-24-044 ; arXiv:2404.19014. - 35 p.
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2024-06-11
04:52
Gravitational waves from cosmic strings in LISA: reconstruction pipeline and physics interpretation / Blanco-Pillado, Jose J. (IKERBASQUE, Bilbao ; Basque U., Bilbao ; U. Basque Country, Leioa) ; Cui, Yanou (UC, Riverside) ; Kuroyanagi, Sachiko (Madrid, IFT ; Nagoya U.) ; Lewicki, Marek (Warsaw U.) ; Nardini, Germano (Stavanger U.) ; Pieroni, Mauro (CERN) ; Rybak, Ivan Yu. (Zaragoza U. ; Porto U., Astron. Dept.) ; Sousa, Lara (Porto U., Astron. Dept.) ; Wachter, Jeremy M. (Wentworth Inst. Tech.)
We initiate the LISA template databank for stochastic gravitational wave backgrounds sourced by cosmic strings. [...]
arXiv:2405.03740 ; LISA-COSWG-24-02. - 61 p.
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2024-06-11
04:51
Early Fault-Tolerant Quantum Algorithms in Practice: Application to Ground-State Energy Estimation / Kiss, Oriel (U. Toronto (main) ; CERN ; U. Trento (main)) ; Azad, Utkarsh (U. Toronto (main)) ; Requena, Borja (U. Toronto (main) ; ICFO, Barcelona) ; Roggero, Alessandro (U. Trento (main) ; ECT, Trento ; FBK, CIT, Trento ; INFN, Trento) ; Wakeham, David (U. Toronto (main)) ; Arrazola, Juan Miguel (U. Toronto (main))
We explore the practicality of early fault-tolerant quantum algorithms, focusing on ground-state energy estimation problems. [...]
arXiv:2405.03754. - 16 p.
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2024-06-11
04:51
Introducing the DREAMS Project: DaRk mattEr and Astrophysics with Machine learning and Simulations / Rose, Jonah C. (Florida U. ; New York U., CCPP) ; Torrey, Paul (Virginia U.) ; Villaescusa-Navarro, Francisco (New York U., CCPP ; Princeton U., Astrophys. Sci. Dept.) ; Lisanti, Mariangela (New York U., CCPP ; Princeton U.) ; Nguyen, Tri (MIT, MKI ; IAIFI, Cambridge) ; Roy, Sandip (Princeton U.) ; Kollmann, Kassidy E. (Princeton U.) ; Vogelsberger, Mark (MIT, MKI ; IAIFI, Cambridge) ; Cyr-Racine, Francis-Yan (New Mexico U.) ; Medvedev, Mikhail V. (Princeton U., Astrophys. Sci. Dept. ; Princeton, Inst. Advanced Study ; Harvard-Smithsonian Ctr. Astrophys. ; Kansas U. ; MIT, LNS) et al.
We introduce the DREAMS project, an innovative approach to understanding the astrophysical implications of alternative dark matter models and their effects on galaxy formation and evolution. [...]
arXiv:2405.00766. - 28 p.
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2024-06-11
04:44
An event generator for Lepton-Hadron Deep Inelastic Scattering at NLO+PS with POWHEG including mass effects / Buonocore, Luca (CERN) ; Limatola, Giovanni (Turin U.) ; Nason, Paolo (INFN, Milan Bicocca ; Munich, Max Planck Inst.) ; Tramontano, Francesco (CERN ; Naples U.)
We present a generator for lepton nucleon collisions in the DIS regime, focusing in particular on processes with a massive lepton and/or a massive quark in the final state. [...]
CERN-TH-2024-070 ; arXiv:2406.05115. - 51 p.
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2024-06-11
04:35
Elevating electron energy gain and betatron X-ray emission in proton-driven wakefield acceleration / Saberi, Hossein (Manchester U. ; Daresbury) ; Xia, Guoxing (Manchester U. ; Daresbury) ; Liang, Linbo (Manchester U. ; Daresbury) ; Farmer, John Patrick (CERN ; Munich, Max Planck Inst.) ; Pukhov, Alexander (Heinrich Heine U., Dusseldorf)
The long proton beams present at CERN have the potential to evolve into a train of microbunches through the self-modulation instability process. [...]
arXiv:2404.19711. - 7 p.
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2024-06-11
04:34
Timing resolution performance of Timepix4 bump-bonded assemblies / Bolzonella, R. (INFN, Ferrara) ; Alozy, J. (CERN) ; Ballabriga, R. (CERN) ; van Beuzekom, M. (NIKHEF, Amsterdam) ; Biesuz, N.V. (INFN, Ferrara) ; Campbell, M. (CERN) ; Cardarelli, P. (INFN, Ferrara) ; Cavallini, V. (INFN, Ferrara) ; Coco, V. (CERN) ; Cotta Ramusino, A. (INFN, Ferrara) et al.
The timing performance of the Timepix4 application-specific integrated circuit (ASIC) bump-bonded to a $100\;\mu\textrm{m}$ thick n-on-p silicon sensor is presented. [...]
arXiv:2404.15499. - 23 p.
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2024-06-10
11:50
Comprehensive analysis of local and nonlocal amplitudes in the $B^0 \to K^{*0} \mu^+\mu^-$ decay / LHCb Collaboration
A comprehensive study of the local and nonlocal amplitudes contributing to the decay $B^0\rightarrow K^{*0}(\to K^+\pi^-) \mu^+\mu^-$ is performed by analysing the phase-space distribution of the decay products. [...]
arXiv:2405.17347 ; LHCb-PAPER-2024-011 ; CERN-EP-2024-122 ; LHCB-PAPER-2024-011. - 2024. - 60 p, 60 p.
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2024-06-10
11:38
Measurement of the branching fraction ratios $R(D^+)$ and $R(D^{*+})$ using muonic $\tau$ decays / LHCb Collaboration
The branching fraction ratios of $\kern 0.18em \overline{\kern -0.18em B}{}^0\to D^+\tau^-\overline{\nu}_{\tau}$ and $\kern 0.18em \overline{\kern -0.18em B}{}^0\to D^{*+}\tau^-\overline{\nu}_{\tau}$ decays are measured with respect to their muonic counterparts, using a data sample corresponding to an integrated luminosity of 2.0 fb$^{-1}$ collected by the LHCb experiment in proton-proton collisions at $\sqrt{s} = 13\,\text{TeV}$. [...]
arXiv:2406.03387 ; LHCb-PAPER-2024-007 ; CERN-EP-2024-125 ; LHCB-PAPER-2024-007. - 2024. - 22 p.
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2024-06-09
04:14
Relic gravitons and non-stationary processes / Giovannini, Massimo (CERN ; INFN, Milan Bicocca)
Stationary processes do not accurately describe the diffuse backgrounds of relic gravitons whose correlations are homogeneous in space (i.e. [...]
arXiv:2405.02193. - 28 p.
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