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1.
Shining Light on the Dark Sector - Searches for Axion-like Particles and Other New Physics in Photonic Final States with FASER / FASER Collaboration
The first FASER search for a light, long-lived particle decaying into a pair of photons is reported. [...]
arXiv:2410.10363 ; CERN-EP-2024-262.
- 2024 - 37.
Full text - Draft (restricted) - Fulltext
2.
Superconducting Dipoles for Super-FRS: Design, Production, First Measurements / Müller, H (Darmstadt, GSI) ; Cho, E (Darmstadt, GSI) ; Michels, M (Darmstadt, GSI) ; Velonas, V (Darmstadt, GSI) ; Chiuchiolo, A (Darmstadt, GSI) ; Kosek, P (Darmstadt, GSI) ; Greiner, F (Darmstadt, GSI) ; Beaumont, A (Darmstadt, GSI) ; Sugita, K (Darmstadt, GSI) ; Winkler, M (Darmstadt, GSI) et al.
The Super FRS is a two-stage in flight separator to be built next to the site of GSI, Darmstadt, Germany as part of FAIR (Facility for Anti-proton and Ion Research). Its purpose is to create and separate rare isotope beams and to enable access for very short-lived nuclei. [...]
2023 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 33 (2023) 4004204
3.
Measurement of the inclusive semileptonic $B$ meson branching fraction in 62.8 fb$^{-1}$ of Belle II data / Belle-II Collaboration
We report a measurement of the branching fraction of inclusive semileptonic $B$ meson decays $B\to X_c\ell\nu\ell$ in $\Upsilon(4S)\to B\bar B$~data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy $e^+e^-$ collider and corresponding to 62.8 fb$^{-1}$ of integrated luminosity. [...]
arXiv:2111.09405 ; BELLE2-CONF-PH-2021-012.
- 17.
Fulltext
4.
Exclusive $B \to X_u \ell \nu_\ell$ Decays with Hadronic Full-event-interpretation Tagging in 62.8 fb$^{-1}$ of Belle II Data / Belle-II Collaboration
We present a reconstruction in early data of the semileptonic decay $B^+ \to \pi^0 \ell^+ \nu_\ell$, and first results of a reconstruction of the decays $B^+ \to \rho^0 \ell^+ \nu_\ell$ and $B^0 \to \rho^- \ell^+ \nu_\ell$ in a sample corresponding to 62.8 fb$^{-1}$ of Belle II data using hadronic $B$-tagging via the full-event-interpretation algorithm. [...]
arXiv:2111.00710 ; BELLE2-CONF-PH-2021-013.
- 24.
Fulltext
5.
Measurements of branching fractions and CP-violating charge asymmetries in multibody charmless $B$ decays reconstructed in 2019-2020 Belle II data / Belle-II Collaboration
We report on measurements of branching fractions ($\mathcal{B}$) and CP-violating charge asymmetries ($\mathcal{A}_{\rm CP}$) of multibody charmless $B$ decays reconstructed by the Belle II experiment at the SuperKEKB electron-positron collider. [...]
arXiv:2109.10807 ; BELLE2-CONF-PH-2021-002.
- 28.
Fulltext
6.
Study of $\chi_{bJ}(nP) \rightarrow \omega \Upsilon(1S)$ at Belle / Belle Collaboration
We report results from a study of hadronic transitions of the $\chi_{bJ}(nP)$ states of bottomonium at Belle. [...]
arXiv:2108.03497 ; BELLE-CONF-2102.
- 12.
Fulltext
7.
Superconducting Magnets for Super-FRS: Production and Testing Status / Müller, Hans (Darmstadt, GSI) ; Allain, Hervé (CEA, DEN, Saclay) ; Borceto, Alice (ASG Supercond., Genova) ; Chiuchiolo, Antonella (Darmstadt, GSI) ; Cho, Eun Jung (Darmstadt, GSI) ; Drago, Giovanni (ASG Supercond., Genova) ; Garcia Escudero, Marcos (Elytt, Madrid) ; Golluccio, Giancarlo (Darmstadt, GSI) ; Greiner, Florian (Darmstadt, GSI) ; Kosek, Pawel (Darmstadt, GSI) et al.
The Super FRS is a two-stage in flight separator to be built next to the site of GSI, Darmstadt, Germany as part of FAIR (Facility for Anti-proton and Ion Research). Its three branches allow to carry out a wide variety of experiments. [...]
Geneva : JACoW, 2021 - 4 p. - Published in : JACoW IPAC 2021 (2021) 2405-2408 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.2405-2408
8.
Search for a light Higgs boson in single-photon decays of $\Upsilon(1S)$ using $\Upsilon(2S) \to \pi^+ \pi^- \Upsilon(1S)$ tagging method / Belle Collaboration
We search for a light Higgs boson ($A^0$) decaying into a $\tau^+\tau^-$ or $\mu^+\mu^-$ pair in the radiative decays of $\Upsilon(1S)$. The production of $\Upsilon(1S)$ mesons is tagged by $\Upsilon(2S)\to \pi^+ \pi^- \Upsilon(1S)$ transitions, using 158 million $\Upsilon(2S)$ events accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. [...]
arXiv:2112.11852; Belle Preprint 2021-30; KEK Preprint 2021-35.- 2022-02-23 - 9 p. - Published in : Phys. Rev. Lett. 128 (2022) 081804 Fulltext: PDF;
9.
Measurements of partial branching fractions of inclusive B→Xuℓ+νℓ decays with hadronic tagging / Belle Collaboration
We present measurements of partial branching fractions of inclusive semileptonic $B \to X_u \, \ell^+\, \nu_{\ell}$ decays using the full Belle data set of 711 fb$^{-1}$ of integrated luminosity at the $\Upsilon(4S)$ resonance and for $\ell = e, \mu$. Inclusive semileptonic $B \to X_u \, \ell^+\, \nu_{\ell}$ decays are CKM suppressed and measurements are complicated by the large background from CKM-favored $B \to X_c \, \ell^+\, \nu_{\ell}$ transitions, which have a similar signature. [...]
arXiv:2102.00020; Belle Preprint 2020-22; KEK Preprint 2020-39.- 2021-07-01 - 34 p. - Published in : Phys. Rev. D 104 (2021) 012008 Fulltext: PDF;
10.
Preliminary Test Results of the First of Series Multiplet for the Super-FRS at FAIR / Cho, Eunjung (Darmstadt, GSI) ; Mueller, Hans (Darmstadt, GSI) ; Sugita, Kei (Darmstadt, GSI) ; Chiuchiolo, Antonella (Darmstadt, GSI) ; Golluccio, Giancarlo (Darmstadt, GSI) ; Greiner, Florian (Darmstadt, GSI) ; Kosek, Pawel (Darmstadt, GSI) ; Roux, Christian (Darmstadt, GSI) ; Winkler, Martin (Darmstadt, GSI) ; Borceto, Alice (ASG Supercond., Genova) et al.
The first of series (FoS) multiplet built for the Super-FRS at GSI/FAIR was delivered to a dedicated magnet test facility at CERN. After a series of tests at room temperature, it was cooled down to 4.5 K and is now under cold powering test. [...]
2020 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 30 (2020) 4101504

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