CERN Accelerating science

CERN Document Server 2,026 záznamov nájdených  1 - 10ďalšíkoniec  skoč na záznam: Hľadanie trvalo 0.45 sekúnd. 
1.
Polarized and un-polarized RK 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(K,K)+, for =μ,e, decays now lie close to the SM predictions. [...]
CERN-TH-2024-148 ; arXiv:2409.03388.
- 18.
Fulltext
2.
Looking forward to Lepton-flavor-violating ALPs / Calibbi, Lorenzo (Nankai U.) ; Redigolo, Diego (INFN, Florence ; Florence U. ; CERN) ; Ziegler, Robert (Karlsruhe U., ITP) ; Zupan, Jure (Cincinnati U.)
We assess the status of past and future experiments on lepton flavor violating (LFV) muon and tau decays into a light, invisible, axion-like particle (ALP), a. We propose a new experimental setup for MEG II, the MEGII-fwd, with a forward calorimeter placed downstream from the muon stopping target. [...]
arXiv:2006.04795; P3H-20-024; TTP20-025.- 2021-09-27 - 62 p. - Published in : JHEP 2109 (2021) 173 Fulltext: 2006.04795 - PDF; document - PDF; Fulltext from publisher: PDF;
3.
Explaining the Flavor Anomalies with a Vector Leptoquark (Moriond 2019 update) / Crivellin, Andreas (PSI, Villigen ; Zurich U.) ; Saturnino, Francesco (U. Bern, AEC)
Several experiments revealed intriguing hints for lepton flavor universality (LFU) violating new physics (NP) in semi-leptonic B meson decays, mainly in bcτν and bs+ transitions at the 35σ level. Leptoquarks (LQ) are prime candidates to address these anomalies as they contribute to semi-leptonic decays already at tree level while effects in other flavor observables, agreeing with the standard model (SM), are loop suppressed. [...]
arXiv:1906.01222; PSI-PR-19-11.- SISSA, 2019-06-05 - 6 p. - Published in : PoS: DIS2019 (2019) , pp. 163
- Published in : , pp. 85-90 Fulltext: 1906.01222 - PDF; PoS(DIS2019)163 - PDF;
In : The XXVII International Workshop on Deep Inelastic Scattering and Related Subjects, Turin, Italy, 8 - 12 Apr 2019, pp.163
4.
A flavor dependent gauge symmetry, Predictive radiative seesaw and LHCb anomalies / Ko, P. (CQUeST, Seoul ; Korea Inst. Advanced Study, Seoul) ; Nomura, Takaaki (Korea Inst. Advanced Study, Seoul) ; Okada, Hiroshi (NCTS, Hsinchu)
We propose a predictive radiative seesaw model at one-loop level with a flavor dependent gauge symmetry U(1)xB3xeμ+τ and Majorana fermion dark matter. For the neutrino mass matrix, we obtain an A1 type texture (with two zeros) that provides us several predictions such as the normal ordering for the neutrino masses. [...]
arXiv:1701.05788; KIAS-P17007.- 2017-09-10 - 6 p. Article from SCOAP3: PDF; Fulltext: PDF;
5.
Study of flavour-changing neutral current and charged current B meson decays / Wang, Yilong
Searching for new physics (NP) beyond the Standard Model (SM) of Particle Physics is one of the primary goals of high energy physics studies [...]
CERN-THESIS-2022-091 - 239 p.

6.
Decay study of <math><mmultiscripts><mi>Be</mi><mprescripts/><none/><mn>11</mn></mmultiscripts></math> with an optical time-projection chamberDecay study of 11Be with an Optical TPC detector / ISOLDE Collaboration
The β decay of one-neutron halo nucleus 11Be was investigated using the Warsaw Optical Time Projection Chamber (OTPC) detector to measure β-delayed charged particles. The results of two experiments are reported [...]
arXiv:2407.09846.- 2024-09-26 - 16 p. - Published in : Phys. Rev. C 110 (2024) 034328 Fulltext: 2407.09846 - PDF; Publication - PDF;
7.
On Light Resonance Interpretations of the B Decay Anomalies / Bishara, Fady (Oxford U., Theor. Phys.) ; Haisch, Ulrich (CERN ; Oxford U., Theor. Phys.) ; Monni, Pier Francesco (CERN)
We sketch a novel method to search for light di-leptonic resonances by exploiting precision measurements of Drell-Yan production. Motivated by the recent hints of lepton flavour universality violation in BK+, we illustrate our proposal by studying the case of spin-1 resonances that couple to muons and have masses in the range of a few GeV. [...]
arXiv:1705.03465; CERN-TH-2017-104.- 2017-09-05 - 5 p. - Published in : Phys. Rev. D 96 (2017) 055002 Fulltext: PDF; Preprint: PDF;
8.
B decay anomalies from nonabelian local horizontal symmetry / Cline, James M. (CERN ; McGill U.) ; Martin Camalich, Jorge (CERN)
Recent anomalies in BK() meson decays are consistent with exchange of a heavy Z vector boson. Here we try to connect such new physics to understanding the origin of flavor, by gauging generation number. [...]
CERN-TH-2017-136; arXiv:1706.08510.- 2017-09-26 - 13 p. - Published in : Phys. Rev. D 96 (2017) 055036 Fulltext: PDF; Preprint: PDF;
9.
Lepton-flavour violating B decays in generic Z models / Crivellin, Andreas (CERN) ; Hofer, Lars (Barcelona, Autonoma U.) ; Matias, Joaquim (Barcelona, Autonoma U.) ; Nierste, Ulrich (KIT, Karlsruhe, TTP) ; Pokorski, Stefan (Warsaw U.) ; Rosiek, Janusz (Warsaw U.)
LHCb has reported deviations from the SM expectations in BKμ+μ angular observables, in Bsϕμ+μ and in ratio R(K)=Br[BKμ+μ]/Br[BKe+e]. For all three decays, a heavy neutral gauge boson mediating bsμ+μ transitions is a prime candidate for an explanation. [...]
arXiv:1504.07928; CERN-PH-TH-2015-091.- Geneva : CERN, 2015 - 10 p. - Published in : Phys. Rev. D 92 (2015) 054013 APS Open Access article: PDF; Fulltext: PDF; External link: Preprint
10.
Overview of BK() Theoretical Calculations and Uncertainties / Mahmoudi, Farvah (IP2I, Lyon ; CERN ; IUF, Paris) ; Monceaux, Yann (IP2I, Lyon)
The search for New Physics (NP) beyond the Standard Model (SM) has been a central focus of particle physics, including in the context of B-meson decays involving bs transitions. These transitions, mediated by flavour-changing neutral currents, are highly sensitive to small NP effects due to their suppression in the SM. [...]
arXiv:2408.03235; CERN-TH-2024-119.- 2024-08-07 - 23 p. - Published in : Symmetry: 16 (2024) , no. 8, pp. 1006 Fulltext: 2408.03235 - PDF; document - PDF; Publication - PDF;

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