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CERN Document Server 6 ჩანაწერია ნაპოვნი  ძიებას დასჭირდა 1.16 წამი. 
1.
Interpreting LHCb's $\Lambda_b\to \Lambda_c\tau\bar\nu$ measurement and puzzles in semileptonic $\Lambda_b$ decays / Bernlochner, Florian U. (Bonn U.) ; Ligeti, Zoltan (LBL, Berkeley ; UC, Berkeley) ; Papucci, Michele (Caltech) ; Robinson, Dean J. (LBL, Berkeley ; UC, Berkeley)
Normalizing the recent LHCb measurement of $\Lambda_b \to \Lambda_c \tau \bar\nu$ to the standard model (SM) prediction for the $\Lambda_b \to \Lambda_c \mu \bar\nu$ rate, instead of a LEP measurement, provides a more consistent comparison with the SM prediction for the lepton flavor universality ratio $R(\Lambda_c)$. This modestly increases $R(\Lambda_c)$ compared to the quoted LHCb result, such that it no longer hints at a suppression compared to the SM, which would be hard to accommodate in new physics scenarios that enhance $R(D^{(*)})$. [...]
arXiv:2206.11282; CALT-TH-2022-023.- 2023-01-01 - 3 p. - Published in : Phys. Rev. D 107 (2023) L011502 Fulltext: 2206.11282 - PDF; Publication - PDF;
2.
The Road Ahead for CODEX-b / Aielli, Giulio (Rome U., Tor Vergata) ; Alimena, Juliette (CERN) ; Beacham, James (Duke U.) ; Ben-Haim, Eli (Paris U., VI-VII) ; Borsato, Martino (Kirchhoff Inst. Phys.) ; Charles, Matthew John (Paris U., VI-VII) ; Vidal, Xabier Cid (Santiago de Compostela U., IGFAE) ; Coco, Victor (CERN) ; De Roeck, Albert (CERN) ; Dey, Biplab (Eotvos Lorand U., Budapest, Inst. Theor. Phys.) et al.
In this Snowmass contribution we present a comprehensive status update on the progress and plans for the proposed CODEX-b detector, intended to search for long-lived particles beyond the Standard Model. [...]
arXiv:2203.07316.
- 13 p.
eConf - Fulltext
3.
Expression of Interest for the CODEX-b Detector / Aielli, Giulio (INFN, Rome2 ; Rome U., Tor Vergata) ; Ben-Haim, Eli (Paris U., VI-VII) ; Cardarelli, Roberto (INFN, Rome2) ; Charles, Matthew John (Paris U., VI-VII) ; Cid Vidal, Xabier (Santiago de Compostela U., IGFAE) ; Coco, Victor (CERN) ; Dey, Biplab (CCNU, Wuhan, Inst. Part. Phys.) ; Dumps, Raphael (CERN) ; Evans, Jared A. (Cincinnati U.) ; Gibbons, George (Birmingham U.) et al.
This document presents the physics case and ancillary studies for the proposed CODEX-b long-lived particle (LLP) detector, as well as for a smaller proof-of-concept demonstrator detector, CODEX-$\beta$, to be operated during Run 3 of the LHC. Our development of the CODEX-b physics case synthesizes `top-down' and `bottom-up' theoretical approaches, providing a detailed survey of both minimal and complete models featuring LLPs. [...]
arXiv:1911.00481.- 2020-12-21 - 47 p. - Published in : Eur. Phys. J. C 80 (2020) 1177 Article from SCOAP3: PDF; Fulltext: PDF;
4.
Leveraging the ALICE/L3 cavern for long-lived exotics / Gligorov, Vladimir V. (Paris U., VI-VII) ; Knapen, Simon (LBL, Berkeley ; UC, Berkeley ; Princeton, Inst. Advanced Study) ; Nachman, Benjamin (LBL, Berkeley) ; Papucci, Michele (LBL, Berkeley ; UC, Berkeley ; CERN) ; Robinson, Dean J. (LBL, Berkeley ; UC, Santa Cruz)
Run 5 of the HL-LHC era (and beyond) may provide new opportunities to search for physics beyond the standard model (BSM) at interaction point 2 (IP2). In particular, taking advantage of the existing ALICE detector and infrastructure provides an opportunity to search for displaced decays of beyond standard model long-lived particles (LLPs). [...]
arXiv:1810.03636.- 2019-01-17 - 14 p. - Published in : Phys. Rev. D 99 (2019) 015023 Article from SCOAP3: PDF; Fulltext: PDF;
5.
Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case / Curtin, David (Toronto U.) ; Drewes, Marco (Louvain U., CP3) ; McCullough, Matthew (CERN) ; Meade, Patrick (YITP, Stony Brook) ; Mohapatra, Rabindra N. (Maryland U.) ; Shelton, Jessie (Illinois U., Urbana) ; Shuve, Brian (Harvey Mudd Coll. ; SLAC) ; Accomando, Elena (Southampton U.) ; Alpigiani, Cristiano (Washington U., Seattle) ; Antusch, Stefan (Basel U.) et al.
We examine the theoretical motivations for long-lived particle (LLP) signals at the LHC in a comprehensive survey of Standard Model (SM) extensions. LLPs are a common prediction of a wide range of theories that address unsolved fundamental mysteries such as naturalness, dark matter, baryogenesis and neutrino masses, and represent a natural and generic possibility for physics beyond the SM (BSM). [...]
arXiv:1806.07396; FERMILAB-PUB-18-264-T.- 2019-10-02 - 133 p. - Published in : Rep. Prog. Phys. 82 (2019) 116201 Fulltext: 1806.07396 - PDF; fermilab-pub-18-264-t - PDF; External link: Fermilab Library Server (fulltext available)
6.
Searching for Long-lived Particles: A Compact Detector for Exotics at LHCb / Gligorov, Vladimir V. (Paris U., VI-VII) ; Knapen, Simon (LBNL, Berkeley ; UC, Berkeley) ; Papucci, Michele (LBNL, Berkeley ; UC, Berkeley) ; Robinson, Dean J. (Cincinnati U.)
We advocate for the construction of a new detector element at the LHCb experiment, designed to search for displaced decays of beyond standard model long-lived particles, taking advantage of a large shielded space in the LHCb cavern that is expected to soon become available. We discuss the general features and putative capabilities of such an experiment, as well as its various advantages and complementarities with respect to the existing LHC experiments and proposals such as SHiP and MATHUSLA. [...]
arXiv:1708.09395.- 2018-02-01 - 12 p. - Published in : Phys. Rev. D 97 (2018) 015023 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF;

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