Ground state heavy tetraquark production in heavy quark fragmentation

Nejad, S. Mohammad Moosavi; Amiri, Nahid

doi:10.1103/physrevd.105.034001

Cited by 7 publications

(5 citation statements)

References 42 publications

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“…However, as highlighted in Ref. [90], these channels are deemed negligible at the initial scale  0 . This observation holds true for vector-quarkonium FFs as well, as discussed in Ref.…”

Section: The Tqhl10 Ff Determinationsmentioning

confidence: 95%

“…To this extent, we will make use of a novel set of collinear Fragmentation Functions (FFs), named TQHL1.0, suited to the VFNS fragmentation of 𝑋 𝑄𝑞 Q q tetraquarks [88]. They were obtained by performing a next-to-leading Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) evolution of an initial-scale input for the constituent heavyquark fragmentation channel, obtained within the spin-physics inspired Suzuki-Nejad-Amiri-Ji (SNAJ) model [89][90][91][92].…”

Section: Hors D'oeuvrementioning

confidence: 99%

“…Our approach to construct a tetraquark FF set begins with the calculation of the (𝑄 → 𝑋 𝑄𝑞 Q q ) 𝑆-wave collinear function, as carried out in Ref. [90] (see Fig. 2).…”

Section: The Tqhl10 Ff Determinationsmentioning

confidence: 99%

“…To this end, we developed first tetraquark collinear NLO FF sets, named TQHL1.0 functions. They were constructed by DGLAP-evolving a SNAJ-inspired model input for the heavy-quark channel [89][90][91][92]. The interconnection between high-energy resummation and the fragmentation mechanism played a crucial role in our analysis.…”

Section: Final Remarksmentioning

confidence: 99%

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Vector Quarkonia at the LHC with Jethad: A High-Energy Viewpoint

Celiberto

2023

Universe

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In this review, we discuss and extend the study of the inclusive production of vector quarkonia, J/ψ and Υ, emitted with large transverse momenta and rapidities at the LHC. We adopt the novel ZCW19+ determination of fragmentation functions to depict the quarkonium production mechanism at the next-to-leading level of perturbative QCD. This approach is based on the nonrelativistic QCD formalism well adapted to describe the formation of a quarkonium state from the collinear fragmentation of a gluon or a constituent heavy quark at the lowest energy scale. We rely upon the NLL/NLO+ hybrid high-energy and collinear factorization for differential cross-sections, where the collinear formalism is enhanced by the BFKL resummation of next-to-leading energy logarithms arising in the t-channel. We employ the method to analyze the behavior of the rapidity distributions for double-inclusive vector quarkonium and inclusive vector quarkonium plus jet emissions. We discover that the natural stability of the high-energy series, previously seen in observables sensitive to the emission of hadrons with heavy flavor detected in the rapidity acceptance of LHC barrel calorimeters, becomes even more manifest when these particles are tagged in forward regions covered by endcaps. Our findings present the important message that vector quarkonia at the LHC via hybrid factorization offer a unique chance to perform precision studies of high-energy QCD, as well as an intriguing opportunity to shed light on the quarkonium production puzzle.

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“…However, as highlighted in Ref. [90], these channels are deemed negligible at the initial scale  0 . This observation holds true for vector-quarkonium FFs as well, as discussed in Ref.…”

Section: The Tqhl10 Ff Determinationsmentioning

confidence: 95%

Section: Hors D'oeuvrementioning

confidence: 99%

“…Our approach to construct a tetraquark FF set begins with the calculation of the (𝑄 → 𝑋 𝑄𝑞 Q q ) 𝑆-wave collinear function, as carried out in Ref. [90] (see Fig. 2).…”

Section: The Tqhl10 Ff Determinationsmentioning

confidence: 99%

Section: Final Remarksmentioning

confidence: 99%

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Vector Quarkonia at the LHC with Jethad: A High-Energy Viewpoint

Celiberto

2023

Universe

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show abstract

“…+e e aa at small energies [20] where N c =3 represents the number of quark colors, e a stands for the electric charge of quark a and σ 0 = 4πα 2 /(3s) refers to the total cross section of e + e − → μ + μ − at lowest-order of perturbative QED. Thus, the LO cross section of e + e − → H + X reads…”

Section: Production Cross Section Of Hadronsmentioning

confidence: 99%

S-wave heavy pentaquark production in direct fragmentation of heavy quark

Moosavi Nejad,

Farashahian

2023

Phys. Scr.

Self Cite

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Study of exotic hadrons with configurations beyond the naive quark model has attracted a lot of interests in recent years. Due to their complicated configuration many theoretical models have been designed for describing their structure. Understanding the production mechanism of exotic hadrons could be helpful to find out their inner structure and to test the theory of QCD as well. It is well-known that the dominant production mechanism for conventional heavy hadrons with large transverse momentum is fragmentation so as this mechanism could also be extended to heavy pentaquarks production. This work is a first effort to study the direct fragmentation of heavy quarks into ground state heavy pentaquarks in leading order of perturbative QCD. Considering the picture of compact pentaquark states, through the Suzuki approach we will compute the fragmentation function of heavy quarks into S-wave heavy pentaquarks. The production cross section of heavy pentaquarks through pair annihilation will also be estimated at lowest order of perturbative QCD.

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A high-energy QCD portal to exotic matter: Heavy-light tetraquarks at the HL-LHC

Celiberto,

Papa

2024

Physics Letters B

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Ground state heavy tetraquark production in heavy quark fragmentation

Cited by 7 publications

References 42 publications

Vector Quarkonia at the LHC with Jethad: A High-Energy Viewpoint

Vector Quarkonia at the LHC with Jethad: A High-Energy Viewpoint

S-wave heavy pentaquark production in direct fragmentation of heavy quark

A high-energy QCD portal to exotic matter: Heavy-light tetraquarks at the HL-LHC

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