Reactions Involving Open Charm Mesons and Production of $X(3872)$
نویسندگان
چکیده
منابع مشابه
Understanding open-charm mesons
We present a theoretical framework that accounts for the new DJ and DsJ mesons measured in the open-charm sector. These resonances are properly described if considered as a mixture of conventional P−wave quark-antiquark states and four-quark components. The narrowest states are basically P−wave quark-antiquark mesons, while the dominantly four-quark states are shifted above the corresponding tw...
متن کاملChiral symmetry and open-charm mesons
Pseudo-scalar and scalar D mesons are considered within the QCD sum rule approach. We present an analysis of the mass splitting of the pseudo-scalar D−D̄ mesons and the relation to QCD condensates. Weinberg type sum rules are derived for chiral partners which highlight the role of the chiral condensate.
متن کاملOpen charm production at RHIC
Recent experimental measurements on open charm production in proton-proton, proton (deuteron)-nucleus and nucleus-nucleus collisions at RHIC are reviewed. A comparison with theoretical predictions is made. Some unsettled issues in open charm production call for precise measurements on directly reconstructed open charm hadrons.
متن کاملOpen charm production at HERA
Inclusive charm meson production cross sections in the deep inelastic scattering and photoproduction regimes are compared with QCD leading and next-to-leading order (NLO) calculations. The NLO predictions are significantly below the data in some parts of the measured kinematic range. Angular distributions of dijet events with charm show clear evidence for the existence of charm originating from...
متن کاملCharm Production and Cross Sections for D Mesons
New high statistics, high resolution fixed target experiments producing 10 10 fully reconstructed charm particles are allowing a detailed study of the charm sector. Recent results on charm quark production from Fermilab fixed target experiments E-791, SELEX and FOCUS are presented. INTRODUCTION This review contains recent results from three Fermilab fixed target experiments dedicated to study c...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Physica Polonica B Proceedings Supplement
سال: 2015
ISSN: 1899-2358,2082-7865
DOI: 10.5506/aphyspolbsupp.8.247