Polarized<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>χ</mml:mi><mml:mrow><mml:mi>c</mml:mi><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>-charmonium production in antiproton-nucleus interactions

Larionov, A. B.; Strikman, M.; Bleicher, Marcus

doi:10.1103/physrevc.89.014621

Cited by 4 publications

(8 citation statements)

References 26 publications

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“…The amplitude of Fig. 1 can be calculated within the generalized eikonal approximation [24][25][26]. By keeping only absorptive terms in the expansion of the matrix element squared (i.e.…”

Section: Modelmentioning

confidence: 99%

Color transparency inπ−-induced dilepton production on nuclei

2016

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We argue that the observation of the color transparency effect in the semiexclusiveprocess is important for determining whether it is possible to extract the generalized parton distributions of the nucleon from the elementary reaction π − p → l + l − n at p lab = 15 − 20 GeV/c at small |t| and large invariant mass of the dilepton pair l + l − . Assuming that the transverse size of the pionic qq pair in the hard interaction point is similar to the one in the reaction γ * p → π + n studied at JLab we predict large color transparency effects in the discussed kinematic range. We also suggest that the semiexclusive ρ 0 production in π − -induced reactions in the same beam momentum region may provide new information on the dynamics of the interaction in the non-vacuum channel, while the J/ψ production can be used to get information on J/ψN total interaction cross section.

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“…The amplitude of Fig. 1 can be calculated within the generalized eikonal approximation [24][25][26]. By keeping only absorptive terms in the expansion of the matrix element squared (i.e.…”

Section: Modelmentioning

confidence: 99%

Color transparency inπ−-induced dilepton production on nuclei

2016

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“…ref. [25]). If not specified otherwise, we apply the following values of the parameters of the charmonium-neutron scattering amplitude in the calculations: σ tot J/ψn = 4 mb, σ tot ψ ′ n = 20 mb, B J/ψn = B ψ ′ n = 3 GeV −2 , and ρ J/ψn = ρ ψ ′ n = 0.2.…”

Section: ψN → ψNmentioning

confidence: 99%

Rescattering effects in antiproton-induced exclusive J/$ \psi$ and $ \psi^{{\prime}}_{}$ production on the deuteron

2019

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On the basis of the generalized eikonal approximation we study the exclusive reactionspd → J/ψ n andpd → ψ ′ n in vicinity of the thresholds for charmonium production on a free proton target. It is shown that the rescattering of the incoming antiproton and outgoing charmonium on the spectator neutron leads to a depletion of the charmonium production at low-and to an enhancement at high transverse momenta. This is in qualitative agreement with previous studies of hard proton knockout in proton-deuteron collisions. We analyze different physical sources of uncertainty which may influence the extraction of the total charmonium-neutron cross section.The color transparency effect for the incomingp largely compensates the influence of charmonium rescattering both at low and high transverse momenta. Different choices of the deuteron wave function lead to significant uncertainties at high transverse momenta. As an outcome of the calculations of charmonium production, we also provide predictions on the production of open charm hadrons due to the dissociation of the charmonium on the neutron. It is shown that the open charm production cross section is proportional to the total charmonium-nucleon cross section and quite stable with respect to the variation of other parameters of the model. We thus suggest that open charm channels are most suited for future studies of charmonium-nucleon interactions at PANDA with a deuteron target.

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“…In this case the on-shell condition is applied to the D-meson, while the D * energy is determined by energy conservation. It is convenient to express the differential invariant D * production cross section (17) in terms of the relative fraction α of the light cone momentum of the DD * molecule carried by the D * :…”

Section: D(d * ) Stripping Cross Sectionmentioning

confidence: 99%

“…It is convenient to express the differential invariant D * production cross section (17) in terms of the relative fraction α of the light cone momentum of the DD * molecule carried by the D * :…”

Section: D( D * ) Stripping Cross Sectionmentioning

confidence: 99%

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Determination of the structure of the X(3872) in p¯A col

2015

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Currently, the structure of the X(3872) meson is unknown. Different competing models of the cc exotic state X(3872) exist, including the possibilities that this state is either a mesonic molecule with dominating D 0D * 0 + c.c. composition, a ccqq tetraquark, or a cc-gluon hybrid state. It is expected that the X(3872) state is rather strongly coupled to thepp channel and, therefore, can be produced inpp andpA collisions at PANDA. We propose to test the hypothetical molecular structure of X(3872) by studying the D orD * stripping reactions on a nuclear residue.

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Polarizedχc2-charmonium production in antiproton-nucleus interactions

Cited by 4 publications

References 26 publications

Color transparency inπ−-induced dilepton production on nuclei

Color transparency inπ−-induced dilepton production on nuclei

Rescattering effects in antiproton-induced exclusive J/$ \psi$ and $ \psi^{{\prime}}_{}$ production on the deuteron

Determination of the structure of the X(3872) in p¯A col

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