Strong decays ofΨ(4.03) andΨ(4.16) as radial excitations of charmonium

Arnéodo, A.; Féménias, Jean-Louis; Guérin, Fabien

doi:10.1007/bf01577396

Cited by 5 publications

(5 citation statements)

References 13 publications

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“…2 This implies that most of the increase in hadron production with increasing W occurs in the central region, a result well known from hadronic phenomenology. Indeed, in DIS at constant Q 2 , the charged pion fragmentation functions D π (x F , W ) rise linearly with ln W at small |x F | < 0.1, but remain constant at larger values of |x F |, both in the forward and backward regions [19]. This is an important result, because it illustrates that independent of the target remnant, there are kinematical effects in the forward region that cannot be described by fragmentation functions depending on z and Q 2 alone, as is usually assumed.…”

Section: General Considerationsmentioning

confidence: 99%

Quark flavor tagging in polarized hadronic processes

Niczyporuk

Bruins

1998

Phys. Rev. D

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We describe a general approach to quark flavor tagging in polarized hadronic processes, with particular emphasis on semi-inclusive deep inelastic scattering. A formalism is introduced that allows one to relate chosen quark flavor polarizations to an arbitrary combination of final-state hadron spin asymmetries. Within the context of the presented formalism, we quantify the sensitivity of various semi-inclusive hadron asymmetries to the light quark flavors. We show that unpolarized ⌳'s may allow one to measure strange quark and antiquark polarizations independently. We also highlight several applications of our formalism, particularly to measurements intended to probe further the spin structure of the nucleon.

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Section: General Considerationsmentioning

confidence: 99%

Quark flavor tagging in polarized hadronic processes

Niczyporuk

Bruins

1998

Phys. Rev. D

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“…Several pioneering works can be found in Refs. [22][23][24], where the open charm strong decays of ψ(3770), ψ(4040), ψ(4160) and ψ(4415) have been evaluated about forty years ago. Stimulated by first observed charmonium-like resonance X(3872) at Belle [47] and CDF [48], Eichten, Lane and Quigg analyzed the open charm strong decays of charmonium states near threshold in the Cornell coupled-channel model [36,37].…”

Section: Introductionmentioning

confidence: 99%

“…By adopting the wave functions of the charmonium states calculated with the LP and SP models in our previous work [17] their strong decay amplitudes can be calculated by the widely used 3 P 0 model [18][19][20][21][22][23][24]. In this method, one assumes that a q q pair is produced from the vacuum with the vacuum quantum numbers, J PC = 0 ++ , and the decay of the charmonium state takes place by regrouping the new q q pair created from the vacuum and the cc in the initial state into the outgoing open-charm meson pair via a rearrangement process.…”

Section: Introductionmentioning

confidence: 99%

“…It is firstly proposed by Micu [18] and then extended by Le Yaouanc et al [19,20]. This model has been widely applied to deal with the open-charm strong decays of the charmonium states [13,[22][23][24][25][26][27][28][29][30][31][32][33][34]46]. In the 3 P 0 model, one assumes that a quark-antiquark pair is produced from the vacuum with the quantum number 0 ++ and the heavy meson decay takes place via the rearrangement of the four quarks.…”

Section: Introductionmentioning

confidence: 99%

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Strong decays of higher charmonium states into open-charm meson pairs

Gui

Lü

et al. 2018

Phys. Rev. D

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The open-charm strong decays of higher charmonium states up to the mass of the 6P multiplet are systematically studied in the 3 P 0 model. The wave functions of the initial charmonium states are calculated in the linear potential (LP) and screened potential (SP) quark model. The decay widths for most of the well-established charmonium states above the open-charm thresholds can be reasonably described. By comparing our quark model calculations with the experimental observations we also discuss the nature of some of the newly observed charmonium-like states. It is found that (i) the ψ(4415) may favor the ψ(4S ) or ψ 1 (3D) assignment. There may exist two highly overlapping vector charmonium states around 4.4 GeV; (ii) In the LP model the J PC = 1 −− Y(4660) resonance and the J PC = 0 ++ X(4500) resonance may be assigned as the ψ(5S ) and χ c0 (4P), respectively; (iii) The newly observed state X * (3860) can be assigned as the χ c0 (2P) state with a narrow width of about 30 MeV; (iv) It seems to be difficult to accommodate the X(4140) and X(4274) states in the same potential model as excited χ c1 states. (v) The X(3940) resonance can be assigned as the η c (3S ) state; (vi) The vector charmonium-like states Y(4230/4260, 4360) and scalar X(4700) cannot be described by any conventional charmonium states self-consistently in our model. PACS numbers:

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“…Intensity interference between identical bosons, generally known as Bose-Einstein correlations [1,2,3,4], is widely used to provide insights into the dynamics process and space-time structure of the particle emitting source created via hadron collisions [5,6,7,8,9,10,11,12,13,14,15] or heavy-ion collisions [16,17,18,19,20,21,22,23]. Using this method to measure the spatial size of nucleon resonances excited by hadronic or electromagnetic probes in the non-perturbative QCD energy region (assuming these resonances decay via emitting identical bosons, e.g.…”

Section: Introductionmentioning

confidence: 99%

Measuring Intensity Interference in a Low Multiplicity System \(\pi \pi X\) with a New Observing Method

He²,

Li³

2020

Acta Phys. Pol. B

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Prior proposed observing approaches using event mixing technique for Bose-Einstein correlations (BEC) measurements in exclusive reactions with very low multiplicities are still unsatisfactory due to the problems of sample reduction and introducing extra and unnecessary fitting parameters. We here propose an event mixing method with a new mixing cut, named energy sum range (ESR) cut, to investigate two-pion Bose-Einstein correlations (BEC) in reactions with only two identical pions among three final state particles. This mixing method employs two-pion energy sum characteristic to control the mixing procedures, with no requirement on eliminating any original events. Numerical simulations are performed to show the viability of this new BEC observing method.

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Strong decays ofΨ(4.03) andΨ(4.16) as radial excitations of charmonium

Cited by 5 publications

References 13 publications

Quark flavor tagging in polarized hadronic processes

Quark flavor tagging in polarized hadronic processes

Strong decays of higher charmonium states into open-charm meson pairs

Measuring Intensity Interference in a Low Multiplicity System \(\pi \pi X\) with a New Observing Method

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