Prompt<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>J</mml:mi><mml:mo stretchy="false">/</mml:mo><mml:mi>ψ</mml:mi></mml:math>production in association with a<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>c</mml:mi><mml:mover accent="true"><mml:mi>c</mml:mi><mml:mo stretchy="false">¯</mml:mo></mml:mover></mml:math>pair within the framework of nonrelativistic QCD via photon-photon collisions at the International Linear Collider

Sun, Z.; Wu, Xing-Gang; Zhang, Hongfei

doi:10.1103/physrevd.92.074021

Cited by 10 publications

(5 citation statements)

References 45 publications

(84 reference statements)

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“…[69] and MRS(R2) [70], respectively. And Set 3 is extracted from the hadroproduction of ηc at the LHC [71].…”

Section: Numerical Resultsmentioning

confidence: 99%

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Revisit prompt $J/ψ$ production in associated with Higgs Boson via gluon fusion at the LHC

Pan,

Niu,

et al. 2021

Preprint

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The production of charmonium associated with Higgs boson via gluon fusion has been investigated in Ref. [1], in which they considered the contribution of final Higgs boson radiation off the charm quark at tree level and found that this process is to be far too rare to be observable in any of the considered experiments. In this paper, the production of prompt J/ψ associated with Higgs boson via gluon fusion at the 14 TeV LHC within the factorization formalism of NRQCD is revisited. After considering the contribution from the final Higgs boson radiation off the top quark in the loop, which is more than three orders of magnitudes over the charm quark at tree level, the production of prompt J/ψ associated with Higgs boson has great potential to be detected. The prompt J/ψ production includes the direct production and indirect production via radiative or hadronic decays of high excited charmonium states. For the direct J/ψ + H production via gluon fusion loop-induced, the 3 S (8) 1Fock state gives dominant contribution to the cross section, which is about 95% to the total direct production. The indirect contribution via loop-induced is appreciable, since the summation of which from ψ(2S) + H, χc1 + H and χc2 + H is about 34% to the total cross section of prompt J/ψ + H. While the indirect contribution from χc0 + H is tiny, which can be neglected. With the great potential to be detected, prompt J/ψ production in associated with Higgs boson can help us to further understand the mechanism of colour-octet, as well as can be useful to further investigate the coupling of the Higgs boson and fermion.

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“…[69] and MRS(R2) [70], respectively. And Set 3 is extracted from the hadroproduction of ηc at the LHC [71].…”

Section: Numerical Resultsmentioning

confidence: 99%

“…III. Set 1 and Set 2 are extracted by fitting the p T distributions from CDF using PDFs for MRST98LO [69] and MRS(R2) [70], respectively; Set 3 is extracted from the hadroproduction of η c at the LHC [71]. From Tab.…”

Section: Numerical Resultsmentioning

confidence: 99%

Revisit prompt $J/ψ$ production in associated with Higgs Boson via gluon fusion at the LHC

Pan,

Niu,

et al. 2021

Preprint

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“…In our previous work [37], we have investigated prompt photoproduction at the CEPC and presented promising results. There are also predictions regarding heavy quarkonium photoproduction at the future collider ILC [38,39], where photons will be generated from laser backscattering (LBS) with electrons and positrons. In Ref.…”

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confidence: 99%

“…In Ref. [38], several heavy quarkonia photoproduction calculations were reported for color-singlet (CS) channels, and the reported results suggested a sizable yield of events. In this work, based on the colliding photons from the electron positron bremsstrahlung, we investigated the photoproduction at the CEPC, by considering both direct production and feeddown contributions from heavier quarkonia.…”

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confidence: 99%

Inclusive photoproduction at the CEPC *

Zhan¹,

Wang²

2021

Chinese Phys. C

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Inclusive photoproduction at the future Circular-Electron-Positron-Collider (CEPC) is studied, using the non-relativistic quantum chromodynamics (NRQCD) factorization formalism. Including the contributions from both direct and resolved photons, we present different distributions for the production. Our results suggest that there will be considerable events, implying that well measurements of the photoproduction can be performed to further study heavy quarkonium physics at electron-positron colliders, in addition to hadron colliders. This supplemental study is very important for clarifying the current situation regarding the heavy quarkonium production mechanism.

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“…The effect of LDME contribution has a hierarchically ordered scaling with v [3], v being the nonrelativistic velocity of Q orQ in the QQ rest frame. The essence of this theory can now be systematically shortened by the double expansion in powers of α s and v. A lot of phenomenological approaches of this framework are meticulously narrated in Refs [4,5,7,8], taking into account the complete and spanned structure of the QQ Fock space by the state n = 2S+1 L (a) J . However, the golden age of the NRQCD theory has been to address the limitations of the early proposed models from which it establishes its coherently solid postulations.…”

mentioning

confidence: 99%

Photoproduction of J/ψ with forward hadron tagging in hadronic collisions

2019

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We study the photoproduction of J/ψ using the NRQCD formalism with forward hadron tagging at the Large Hadron Collider. We estimate the total cross sections and event rates with and without nuclear shadowing effects in high energy proton-proton, proton-nucleus and nucleus-nucleus collisions. Our results show that the processes which involve J/ψ photoproduction depend on the choice of forward detector acceptances ξ. Under some precise cut of p J/ψ T and z J/ψ kinematic variables, we find that the distributions of photoproduction of J/ψ are led by the Fock state 1 S1 . The total cross sections and event rates will be smaller if the nuclear shadowing effects are considered. The processes give a crucial photoproduction signature at the LHC with forward detector acceptances. The exploration and the detection of the interactions will be useful for studying the mechanism of heavy quarkonium production. I. INTRODUCTIONSince the discovery of heavy quarkonia in the mid-1970s, their production and decay become reliable tools to improve our understanding of theoretical aspects of quantum chromodynamics (QCD) from the hard region, where the strong interaction is realized with a large momentum transfer, to the soft region, where the strong interaction is carried out with a small momentum transfer. These production and decay of heavy quarkonia are studied under the non-relativistic quantum chromodynamics (NRQCD) due to the large mass of heavy quarks (m c ∼ 1.5 GeV, m b ∼ 4.75 GeV). The full description of the theoretical framework was proposed by Bodwin, Braaten and Lepage(BBL) [1]. It factorizes the quarkonium production in terms of short distance QCD cross sections and long distance matrix elements (LDMEs). The former can be pertubatively evaluated in series of the running coupling constant α s while the latter is the probability for a heavy QQ pair with spin S, orbital angular momentum L, total angular momentum J, and color multiplicity a = 1 (color-singlet), 8 (color-octet) to evolve into a physical heavy quarkonium state. The value of LDMEs can either be calculated by utilizing non-perturbative methods or extracted phenomenologically from data [2], i.e., QCD lattice simulations or measurements in some production processes. The QQ pair is generated from the partonic interaction at short distances in color singlet (CS) or in color-octet (CO) states and hadronizes into physical CS observable by emitting soft gluons non-perturbatively. The effect of LDME contribution has a hierarchically ordered scaling with v [3], v being the nonrelativistic velocity of Q orQ in the QQ rest frame. The essence of this theory can now be systematically shortened by the double expansion in powers of α s and v. A lot of phenomenological approaches of this framework are meticulously narrated in Refs [4,5,7,8], taking into account the complete and spanned structure of the QQ Fock space by the state n = 2S+1 L (a) J . However, the golden age of the NRQCD theory has been to address the limitations of the early proposed models from which it establishes...

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PromptJ/ψproduction in association with acc¯pair within the framework of nonrelativistic QCD via photon-photon collisions at the International Linear Collider

Cited by 10 publications

References 45 publications

Revisit prompt $J/ψ$ production in associated with Higgs Boson via gluon fusion at the LHC

Revisit prompt $J/ψ$ production in associated with Higgs Boson via gluon fusion at the LHC

Inclusive photoproduction at the CEPC *

Photoproduction of J/ψ with forward hadron tagging in hadronic collisions

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