Search results for "BELLE"
showing 10 items of 85 documents
Belle II pixel detector: Performance of final DEPFET modules
2020
Belle-II DEPFET and PXD Collaboration: et al.
Update on the b→s anomalies
2019
We present a brief update of our model-independent analyses of the b->s data presented in the articles published in Phys. Rev. D96 (2017) 095034 and Phys. Rev. D98 (2018) 095027 based on new data on R_K by LHCb, on R_{K^*} by Belle, and on B_{s,d}-> mu^+ mu^- by ATLAS.
DEPFET pixel detector in the Belle II experiment
2019
Belle II DEPFET and PXD Collaboration: et al.
Data quality monitors of vertex detectors at the start of the Belle II experiment
2019
The Belle II experiment features a substantial upgrade of the Belle detector and will operate at the SuperKEKB energy-asymmetric e+e− collider at KEK in Tsukuba, Japan. The accelerator completed its first phase of commissioning in 2016, and the Belle II detector saw its first electron-positron collisions in April 2018. Belle II features a newly designed silicon vertex detector based on double-sided strip layers and DEPFET pixel layers. A subset of the vertex detector was operated in 2018 to determine background conditions (Phase 2 operation). The collaboration completed full detector installation in January 2019, and the experiment started full data taking. This paper will report on the fin…
Premis Extraordinaris de Medicina i Odontologia 2007/2008
2008
Acte de lliurament dels premis extraordinaris als estudiants llicenciats en Medicina i Odontologia del curs acadèmic 2006-2007 celebrat en el saló d'actes del Museu de Belles Arts Sant Pius V.
« Quelques libres propos sur un sujet scabreux » : "L’Ecole Emancipée" (1910-1914)
2003
International audience; Notre article se propose d’étudier l’approche de question sexuelle, par "L’Ecole Emancipée", depuis le 10 octobre 1910, date de sa première parution, jusqu’à la Première Guerre Mondiale. "L’Ecole Emancipée" est un hebdomadaire publié par la Fédération Nationale des Syndicats d’Institutrices et d’Instituteurs Publics de France et des colonies créée en 1905. Ce n’est pas l’organe officiel de la fédération, qui est "L’émancipation de l’Instituteur", mais une revue pédagogique mêlant informations syndicales, sociales et juridiques, formation et pédagogie, et dont la devise est « Instruisons nous et armons-nous ». Elle possède une dynamique propre, liée à sa fonction éduc…
Alignment for the first precision measurements at Belle II
2019
On March 25th 2019, the Belle II detector recorded the first collisions delivered by the SuperKEKB accelerator. This marked the beginning of the physics run with vertex detector. The vertex detector was aligned initially with cosmic ray tracks without magnetic field simultaneously with the drift chamber. The alignment method is based on Millepede II and the General Broken Lines track model and includes also the muon system or primary vertex position alignment. To control weak modes, we employ sensitive validation tools and various track samples can be used as alignment input, from straight cosmic tracks to mass-constrained decays. With increasing luminosity and experience, the alignment is …
A non-relativistic model for the $[cc][\bar{c}\bar{c}]$ tetraquark
2017
We use a non-relativistic model to study the spectroscopy of a tetraquark composed of $[cc][\bar{c}\bar{c}]$ in a diquark-antidiquark configuration. By numerically solving the Schr\"{o}dinger equation with a Cornell-inspired potential, we separate the four-body problem into three two-body problems. Spin-dependent terms (spin-spin, spin-orbit and tensor) are used to describe the splitting structure of the $c\bar{c}$ spectrum and are also extended to the interaction between diquarks. Recent experimental data on charmonium states are used to fix the parameters of the model and a satisfactory description of the spectrum is obtained. We find that the spin-dependent interaction is sizable in the …