Towards an Understanding of the New Charm and Charm-Strange Mesons

نویسنده

  • Stephen Godfrey
چکیده

The observation of the D∗ sJ (2317), DsJ (2460), and SELEX D ∗ sJ (2632) states with properties differing considerably from what was expected has led to a renewed interest in hadron spectroscopy. In addition to these states, non-strange partners of the DsJ states have also been observed. Understanding the D∗ 0 and D ′ 1 states can provide important insights into the DsJ states. In this contribution I examine quark model predictions for the D∗ 0 and D ′ 1 states and discuss experimental measurements that can shed light on them. I find that these states are well described as the broad, j = 1/2 non-strange charmed P -wave mesons. In the latter part of this writeup I discuss the cs̄ possibilities for the SELEX D∗ sJ (2632) and measurements that can shed light on it.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Charm fragmentation and excited charm and charm-strange mesons at ZEUS

Charm hadrons were produced copiously in ep collisions with a centre-of-mass energy of 318GeV at HERA providing a means to study charm hadronisation. During first phase of the HERA operation (1992-2000), the ZEUS collaboration accumulated data sample corresponding to an integrated luminosity of ∼ 120 pb. Measurements of the D, D, D and Λc production a with the HERA I data were used to determine...

متن کامل

Charm Production and Fragmentation in Charged Current DIS

In charged current deep inelastic scattering charm is dominantly produced in scattering events on strange quarks, thereby allowing for an experimental determination of the nucleon’s strange sea density. A measurement of the energy spectrum of final state charm fragments (D-mesons) determines the charm fragmentation function at spacelike scales considerably below typical ee c.m.s. energies. NLO ...

متن کامل

Charm Hadron Spectroscopy with Zeus

Neutral orbitally excited P-wave charm mesons have been reconstructed in the D * ± π ∓ final state and the charm-strange meson D ± s1 (2536) was found in the D * ± K 0 s final state. A search for radially excited charm mesons in the D * ± π + π − final state has also been performed. A search for a charm pentaquark state near 3.1 GeV was made in the decay mode D * ± p ∓. Using more than 40,000 r...

متن کامل

Charm and charmonium spectroscopy at B-factories

Since a few years, charm and charmonium spectroscopy has revived, both from experimental and theoritical point of views. Many new states have been discovered triggering numerous theoritical publications. The B-factories with their large enriched charm sample have played a leading role on the experimental side with the observation and study of most of the new states. Other experiments such as CL...

متن کامل

Strangeness and charm at FAIR

We study the properties of strange and charm mesons in hot and dense matter within a selfconsistent coupled-channel approach for the experimental conditions of density and temperature expected for the CBM experiment at FAIR/GSI. The in-medium solution at finite temperature accounts for Pauli blocking effects, mean-field binding on all the baryons involved, and meson self-energies. In the strang...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2004