scholarly journals Light cone distribution amplitudes of excited p -wave heavy quarkonia at leading twist

2017 ◽  
Vol 96 (1) ◽  
Author(s):  
M. A. Olpak ◽  
A. Ozpineci ◽  
V. Tanriverdi
Keyword(s):  
Light Cone ◽  
Heavy Quarkonia ◽  
P Wave

scholarly journals Decay properties of P -wave charmed baryons from light-cone QCD sum rules

2017 ◽  
Vol 95 (9) ◽  
Author(s):  
Hua-Xing Chen ◽  
Qiang Mao ◽  
Wei Chen ◽  
Atsushi Hosaka ◽  
Xiang Liu ◽  
...  
Keyword(s):  
Light Cone ◽  
Sum Rules ◽  
P Wave ◽  
Qcd Sum Rules ◽  
Charmed Baryons ◽  
Decay Properties

scholarly journals Inclusive Hadroproduction of P -Wave Heavy Quarkonia in Potential Nonrelativistic QCD

2021 ◽  
Vol 126 (8) ◽  
Author(s):  
Nora Brambilla ◽  
Hee Sok Chung ◽  
Antonio Vairo
Keyword(s):  
Heavy Quarkonia ◽  
P Wave ◽  
Nonrelativistic Qcd

EXCLUSIVE PRODUCTION OF SOFT PIONS IN DIS

2009 ◽  
Vol 24 (35n37) ◽  
pp. 2931-2939
Author(s):  
V. M. BRAUN ◽  
D. YU. IVANOV ◽  
A. LENZ ◽  
A. PETERS
Keyword(s):  
Cross Sections ◽  
Light Cone ◽  
Sum Rules ◽  
Chiral Limit ◽  
P Wave ◽  
Threshold Region ◽  
S Wave ◽  
Exclusive Production ◽  
Model Independent ◽  
Momentum Transfer Dependence

We consider pion electroproduction close to threshold for Q2 in the region 1–10 GeV2 on a nucleon target. The momentum transfer dependence of the S-wave multipoles at threshold, E0+ and L0+, is calculated in the chiral limit using light-cone sum rules. Predictions for the cross sections in the threshold region, both for π0p and π+n channels, are given that include P-wave contributions that, as we argue, are model independent to a large extent. The results are compared with the SLAC E136 data on the structure function F2(W,Q2) in the threshold region.

scholarly journals Inclusive Hadroproduction of P-wave Heavy Quarkonia in pNRQCD

2022 ◽  
Vol 258 ◽  
pp. 04005
Author(s):  
Hee Sok Chung
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Distance Matrix ◽  
Heavy Quarkonia ◽  
P Wave ◽  
Inclusive Production ◽  
Matrix Elements ◽  
Long Distance ◽  
Strongly Coupled ◽  
Section Data

We compute NRQCD long-distance matrix elements that appear in the inclusive production cross sections of P-wave heavy quarkonia in the framework of potential NRQCD. The formalism developed in this work applies to strongly coupled charmonia and bottomonia. This makes possible the determination of color-octet NRQCD long-distance matrix elements without relying on measured cross section data, which has not been possible so far. We obtain results for inclusive production cross sections of χcJ and χbJ at the LHC, which are in good agreement with measurements.

scholarly journals $$B_{(s)}$$ to light tensor meson form factors via LCSR in HQEFT with applications to semileptonic decays

2021 ◽  
Vol 81 (1) ◽  
Author(s):  
Ya-Bing Zuo ◽  
Chong-Xing Yue ◽  
Bo Yu ◽  
Ying-Hui Kou ◽  
Yan Chen ◽  
...  
Keyword(s):  
Heavy Quark ◽  
Light Cone ◽  
Neutral Current ◽  
Form Factors ◽  
Semileptonic Decays ◽  
Effective Field ◽  
P Wave ◽  
S Wave ◽  
Tensor Meson ◽  
Flavor Changing

AbstractIn the present work, the form factors of $$B_{(s)}$$ B ( s ) to light P-wave tensor mesons ($$a_2(1320)$$ a 2 ( 1320 ) , $$K^*_2(1430)$$ K 2 ∗ ( 1430 ) , $$f_2(1270)$$ f 2 ( 1270 ) , $$f^\prime _2(1525)$$ f 2 ′ ( 1525 ) ) are calculated via the light cone sum rules (LCSR) in the framework of heavy quark effective field theory (HQEFT). Firstly, the expressions of form factors in terms of the light cone distribution amplitudes (DAs) of tensor mesons are derived via the LCSR at the leading order of heavy quark expansion. It is found that the penguin type form factors can be obtained directly from the corresponding semileptonic ones, which is similar to the case of S-wave mesons. Considering the light tensor meson DAs to twist-3, we give the numerical results of form factors systematically. As applications, we investigate the branching ratios, longitudinal polarization fractions and forward-backward asymmetries of relevant semileptonic decays induced by charged current and flavor changing neutral current (FCNC) separately. Our results may be tested by more precise experiments in the future.

scholarly journals Decay properties of P-wave bottom baryons within light-cone sum rules

2020 ◽  
Vol 80 (2) ◽  
Author(s):  
Hui-Min Yang ◽  
Hua-Xing Chen ◽  
Er-Liang Cui ◽  
Atsushi Hosaka ◽  
Qiang Mao
Keyword(s):  
Mass Spectrum ◽  
Ground State ◽  
Light Cone ◽  
Sum Rules ◽  
Decay Process ◽  
P Wave ◽  
Vector Mesons ◽  
Decay Properties ◽  
Partner State

Abstract We use the method of light-cone sum rules to study decay properties of P-wave bottom baryons belonging to the SU(3) flavor $$\mathbf {6}_F$$6F representation. In Cui et al. (Phys Rev D 99:094021, 2019) we have studied their mass spectrum and pionic decays, and found that the $$\varSigma _{b}(6097)$$Σb(6097) and $$\varXi _{b}(6227)$$Ξb(6227) can be well interpreted as P-wave bottom baryons of $$J^P = 3/2^-$$JP=3/2-. In this paper we further study their decays into ground-state bottom baryons and vector mesons. We propose to search for a new state $$\varXi _b({5/2}^-)$$Ξb(5/2-), that is the $$J^P = 5/2^-$$JP=5/2- partner state of the $$\varXi _{b}(6227)$$Ξb(6227), in the $$\varXi _b({5/2}^-) \rightarrow \varXi _b^{*}\rho \rightarrow \varXi _b^{*}\pi \pi $$Ξb(5/2-)→Ξb∗ρ→Ξb∗ππ decay process. Its mass is $$12 \pm 5$$12±5 MeV larger than that of the $$\varXi _{b}(6227)$$Ξb(6227).

Positronium and heavy quarkonia as testing case for discretized light-cone quantization

1992 ◽  
Vol 45 (10) ◽  
pp. 3755-3774 ◽  
Author(s):  
M. Krautgärtner ◽  
H. C. Pauli ◽  
F. Wölz
Keyword(s):  
Light Cone ◽  
Heavy Quarkonia ◽  
Light Cone Quantization ◽  
Testing Case
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