Improved determination of the mass of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mn>1</mml:mn></mml:mrow><mml:mrow><mml:mi>−</mml:mi><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>light hybrid meson from QCD sum rules

Jin, Hong-Ying; Körner, Jürgen; Steele, T. G.

doi:10.1103/physrevd.67.014025

Cited by 41 publications

(39 citation statements)

References 39 publications

(48 reference statements)

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“…With the small g 3 G 3 value used in [23,24], the range is 1.55-2.29 GeV, which is consistent with previous predictions within errors and covers π 1 (1600). In the large g 3 G 3 case, the predicted range is 1.84-2.46 GeV.…”

Section: Jhep04(2015)004supporting

confidence: 76%

“…We choose this set of values to avoid subjective factors in choosing the inputs. We also notice that the value of g 3 G 3 in [46] is different from the previous one used in [23][24][25]. This value changes from 1.2 GeV 2 α s G 2 (from dilute gas instantons [47] and lattice calculations [48]) to 8.2 GeV 2 α s G 2 (from charmonium systems [44,45]), which largely affects the mass predictions.…”

Section: Jhep04(2015)004mentioning

confidence: 74%

“…The d ≦ 6 contributions to Π v (q 2 ) including the NLO corrections to the perturbative and the α s G 2 and α s qq 2 terms can be found in [14][15][16][17][18][19][20][21][22][23]. Π d≦6 v (q 2 ) can be written as…”

Section: Qcd Sum Rules For the 1 −+ Light Hybrid Mesonmentioning

confidence: 99%

“…However,the dimension-8 coefficients used there are not a complete form (only the factorized quark condensates in [14]). And we follow our earlier works [22,23] in choosing the inputs there and neglect the violation of saturation hypothesis. Moreover, the sum rule window there is just established by keeping HDC < 10% as the common procedure, lacking in an explicit consideration of the convergence of OPE.…”

Section: Jhep04(2015)004mentioning

confidence: 99%

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New predictions on the mass of the 1−+ light hybrid meson from QCD sum rules

Huang

Jin

Zhang

2015

J. High Energ. Phys.

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Abstract:We calculate the coefficients of the dimension-8 quark and gluon condensates in the current-current correlator of 1 −+ light hybrid current gq(x)γ ν iG µν (x)q(x). With inclusion of these higher-power corrections and updating the input parameters, we re-analyze the mass of the 1 −+ light hybrid meson from Monte-Carlo based QCD sum rules. Considering the possible violation of factorization of higher dimensional condensates and variation of g 3 G 3 , we obtain a conservative mass range 1.72-2.60 GeV, which favors π 1 (2015) as a better hybrid candidate compared with π 1 (1600) and π 1 (1400).

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Section: Jhep04(2015)004supporting

confidence: 76%

Section: Jhep04(2015)004mentioning

confidence: 74%

Section: Qcd Sum Rules For the 1 −+ Light Hybrid Mesonmentioning

confidence: 99%

Section: Jhep04(2015)004mentioning

confidence: 99%

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New predictions on the mass of the 1−+ light hybrid meson from QCD sum rules

Huang

Jin

Zhang

2015

J. High Energ. Phys.

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“…The hybrid meson mass from the constituent glue model is 2 GeV [7] while the value from the flux tube model is around 1.9 GeV [8,9]. The prediction from the QCD sum rule approach is around 1.6 GeV [10,11]. However, Yang obtained a surprisingly low mass around 1.26 GeV for the 1 −+ hybrid meson using QCD sum rule [12].…”

Section: Introductionmentioning

confidence: 99%

IGJPC=1−1−+tetraquark states

2008

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We study the tetraquark states with I G J P C = 1 − 1 −+ in the QCD sum rule. After exhausting all possible flavor structures, we analyses both the SVZ and finite energy sum rules. Both approaches lead to a mass around 1.6 GeV for the state with the quark contents qqqq, and around 2.0 GeV for the state with the quark contents qsqs. The flavor structure (3 ⊗6) ⊕ (6 ⊗ 3) is preferred. Our analysis strongly indicates that both π1(1600) and π1 (2015) are also compatible with the exotic tetraquark interpretation, which are sometimes labeled as candidates of the 1 −+ hybrid mesons. Moreover one of their dominant decay modes is a pair of axial-vector and pseudoscalar mesons such as b1(1235)π, which is sometimes considered as the characteristic decay mode of the hybrid mesons.

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Masses of open-flavour heavy-light hybrids from QCD sum-rules

Ho¹,

Harnett²,

Steele³

2017

J. High Energ. Phys.

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We use QCD Laplace sum-rules to predict masses of open-flavour heavy-light hybrids where one of the hybrid's constituent quarks is a charm or bottom and the other is an up, down, or strange. We compute leading-order, diagonal correlation functions of several hybrid interpolating currents, taking into account QCD condensates up to dimensionsix, and extract hybrid mass predictions for all J P ∈ {0 ± , 1 ± }, as well as explore possible mixing effects with conventional quark-antiquark mesons. Within theoretical uncertainties, our results are consistent with a degeneracy between the heavy-nonstrange and heavystrange hybrids in all J P channels. We find a similar mass hierarchy of 1 + , 1 − , and 0 + states (a 1 + state lighter than essentially degenerate 1 − and 0 + states) in both the charm and bottom sectors, and discuss an interpretation for the 0 − states. If conventional meson mixing is present the effect is an increase in the hybrid mass prediction, and we estimate an upper bound on this effect.

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Improved determination of the mass of the1−+light hybrid meson from QCD sum rules

Cited by 41 publications

References 39 publications

New predictions on the mass of the 1−+ light hybrid meson from QCD sum rules

New predictions on the mass of the 1−+ light hybrid meson from QCD sum rules

IGJPC=1−1−+tetraquark states

Masses of open-flavour heavy-light hybrids from QCD sum-rules

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