Production of charmed pseudoscalar mesons in antiproton-proton annihilation

Haidenbauer, J.; Krein, G.

doi:10.1103/physrevd.89.114003

Cited by 30 publications

(61 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is in contrast to the findings forp p →Λ − c Λ + c andp p →D 0 D 0 , where models using simple [16,17] or Reggeized hadron exchange [18,19] find cross sections which are two to three orders of magnitude larger than those from the handbag-type mechanism. The crucial point in these models seems to be the strength of the D ( * ) pY c coupling which is either fixed by SU (4)-flavor symmetry [16][17][18] or by QCD sum rules [19]. In our case this coupling corresponds to the form factors G and S T .…”

Section: Resultscontrasting

confidence: 54%

A Perturbative QCD Approach to $$\varvec{\pi ^{-}~p \rightarrow D^{-}~{\varLambda }_{c}^{+}}$$ π - p → D - Λ c +

Kofler

Schweiger

2017

Few-Body Syst

View full text Add to dashboard Cite

We employ the generalized parton picture to analyze the reaction π − p → D − Λ + c . Thereby it is assumed that the process amplitude factorizes into one for the perturbatively calculable subprocessū u →c c and hadronic matrix elements that can be parameterized in terms of generalized parton distributions for the π − → D − and p → Λ + c transitions, respectively. Representing these parton distributions in terms of valencequark light-cone wave functions for π, D, p and Λ c allows us to make numerical predictions for unpolarized differential and integrated cross sections as well as spin observables. In the kinematical region where this approach is supposed to work, i.e. s 20 GeV 2 and in the forward hemisphere, the resulting cross sections are of the order of nb. This is a finding that could be of interest in view of plans to measure π − p → D − Λ + c , e.g., at J-PARC or COMPASS.

show abstract

Section: Resultscontrasting

confidence: 54%

A Perturbative QCD Approach to $$\varvec{\pi ^{-}~p \rightarrow D^{-}~{\varLambda }_{c}^{+}}$$ π - p → D - Λ c +

Kofler

Schweiger

2017

Few-Body Syst

View full text Add to dashboard Cite

show abstract

“…2, the resultant cross section is estimated to be in the range [1;10] nb (quark model), and [20;30] nb (baryon exchange model), as shown, respectively. The results of these models are based on SU(4) symmetry, which are expected to be only valid for D(D s ) ground states [13]. For excited D or D s states, the situation is more complicated.…”

Section: Motivationmentioning

confidence: 99%

“…However, the future PANDA experiment [10] will reach a beam momentum resolution ∆p/p of the order of 10 −5 (in the high resolution mode), which is ideally what is needed to perform the challenging measurement of the width of the D * s0 (2317) + and the D s1 (2460) + . A crucial point is of course the amount of luminosity that is needed for such [11,12], baryon exchange [13] or quark model [14], (un)quenched lattice QCD calculations), leading to different conclusions.…”

Section: Motivationmentioning

confidence: 99%

Hadrons with c-s quark content: past, present and future

Prencipe¹

2015

Proceedings of 53rd International Winter Meeting on Nuclear Physics — PoS(Bormio2015)

View full text Add to dashboard Cite

The PANDA detector at FAIR aims to conduct an antiproton-proton experiment with a very high rate capability. It is expected to feature high mass resolution, more than 20 times better than achieved at B-factories. PANDA is in a unique position to perform highly resolved mass scan, and to measure the width of very narrow charm and charmonium-like states, whose nature is still unknown, 12 years after their discovery. In this report, we present a method to determine the width of the D * s0 (2317) + . We discuss the future perspectives of PANDA, based on our present simulations, in relation with the recent measurements performed by LHCb and the performances in this field at the B factories.

show abstract

“…For the planning of these experiments at theP ANDA facility, reliable theoretical estimates of the cross section ofpp →Λ − c Λ + c ,pp →D 0 D 0 and pp → D − D + reactions are of crucial importance [36,37]. In Ref.…”

Section: Charmed Hadron Production Inpp Annihilationmentioning

confidence: 99%

Nuclear reactions at intermediate energies

Shyam

2016

EPJ Web of Conferences

View full text Add to dashboard Cite

In the domain of Nuclear reactions at intermediate energies, the QCD coupling constant α s is large enough (∼ 0.3 -0.5) to render the perturbative calculational techniques inapplicable. In this regime the quarks are confined into colorless hadrons and it is expected that effective field theories of hadron interactions via exchange of hadrons, provide useful tools to describe such reactions. In this contribution we discuss the application of one such theory, the effective Lagrangian model, in describing the hadronic reactions at intermediate energies whose measurements are the focus of a vast international experimental program.In the quest for understanding the quantum chromodynamics (QCD), the hadron-hadron, hadron-photon and hadron-lepton reactions have played a major role. From these studies two quite distinct regimes of QCD have emerged. The first regime is of those processes that involve very high momentum transfers. Here the asymptotic freedom property of QCD has enabled the perturbative QCD (pQCD) methods to describe [1] a large set of high energy large momentum transfer reaction observables with great precision, providing the most precise test of QCD to date [2,3].The second regime that includes nuclear reactions at intermediate energies, is characterized by the confinement of quarks inside the hadrons. This remarkable feature, along with the running of the QCD coupling constant (α s ) towards larger values makes the pQCD methods inapplicable -one requires techniques that can solve the theory exactly. To date, the only fully predictive non-perturbative method for studying QCD at low energies is 201 , 02002 (2016) EPJ Web of Conferences

show abstract

Production of charmed pseudoscalar mesons in antiproton-proton annihilation

Cited by 30 publications

References 77 publications

A Perturbative QCD Approach to $$\varvec{\pi ^{-}~p \rightarrow D^{-}~{\varLambda }_{c}^{+}}$$ π - p → D - Λ c +

A Perturbative QCD Approach to $$\varvec{\pi ^{-}~p \rightarrow D^{-}~{\varLambda }_{c}^{+}}$$ π - p → D - Λ c +

Hadrons with c-s quark content: past, present and future

Nuclear reactions at intermediate energies

Contact Info

Product

Resources

About