QCD WITH CHARM · Charm as probe for QCD and CP violation in B Decays
6РП — Действия „Мария Кюри“
- Период
- 2006-09-01 → 2007-08-31
- Финансиране от ЕС
- 40 000 €
- Участници
- 1
- Схема
- ERG
Линиите свързват координатора с партньорите.
Накратко на български
Разпадите на частици, наречени чарм-мезони (например $D \to K e \nu$), се анализират чрез данни от експеримента BaBar. Тези измервания помагат за калибриране на теоретични изчисления и за по-добро разбиране на нарушаването на CP-симетрията при разпадите на B-мезони.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
Final Activity Report Summary - QCD WITH CHARM (Charm as probe for QCD and CP violation in b decays)
Accurate measurements of specific charm particle decays are needed to provide calibration for lattice-QCD calculations and for some CP violation measurements. With the large amount of data registered by the BaBar experiment (SLAC centre, California, United States), and using charm pairs coming from the continuum, precise measurements involving charm semileptonic decays have been performed. The outcome of the work performed during this time has been the most precise measurement up to date of the form factor for the decay channel D->K e nu using a small data sample (75fb-1) of the BaBar data, and the most precise measurement of the form factors for the Ds->phi e nu decay cannel (with 214 fb-1) and the first-time observation of the s-wave in the Ds -> KK e nu channel, through the interference with the phi meson. In addition, an extensive work has been done in the developing of tools to control the background and to measure the form factors of the D->pi e nu and D-> K pi e nu decay channel, and the K pi mass distribution.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
Accurate measurements of specific charm particle decays are needed to provide calibration for lattice-QCD computations and for some CP violation measurements. In particular, these inputs are crucial to extract electro-weak parameters as the CP violation phase and light (u,d,s) quark masses. With the large amount of data registered at present by the BABAR detector (more than 300 fb-1) and foreseen by 2008 (more than 1 ab-1), and using charm quark pairs coming from the continuum, precise measurements involving charm semileptonic and hadronic decays can be addressed.These studies will help, among others, in the precise measurements of the magnitude and phase of the Vub element of the Cabibbo-Cobayashi-Maskawa (CKM) matrix. The phase of Vub, gamma, is directly r elated to the phase generating CP violation in the Standard Model, since it is free of contamination from possible New Physics effects. The applicant will join the Spanish group already involved in the BABAR Collaboration and will keep close contact with Italian and French BABAR communities. The group is currently involved in the measurement of the angle gamma and in hadronic charm decays. She will continue the studies done during the previous IEF contract in France on charm semileptonic decays to perform accurate measurements of specific decay channels, as well as will actively contribute to the current efforts of the hosting group (experimental data analysis together with contribution to the software and data taking of the BaBar experiment).
Оригинален текст от CORDIS (на английски).
Участници
- UNIVERSITAT DE VALENCIA. ESTUDI GENERAL · VALENCIAКоординаторИспания
Връзки
Данни: CORDIS, © Европейски съюз