Free-form smearing for bottomonium and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi></mml:math>meson spectroscopy

Wurtz, Mark; Lewis, Randy; Woloshyn, R. M.

doi:10.1103/physrevd.92.054504

Cited by 32 publications

(42 citation statements)

References 37 publications

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“…So far, different types of quark potential model have been applied in studying the bottomonium spectrum, including the nonrelativistic [5,[27][28][29][30], the semirelativistic [31,32], the relativized [33][34][35], and the relativistic [36,37] versions. The bottomonium spectrum has also been studied by the Bethe-Salpeter equation [38], the coupled channel model [39][40][41][42], the QCD sum rule [43,44], the Regge phenomenology [45][46][47][48], the lattice QCD [49][50][51], and other method [52]. 2 Belle also measured R ≡ σ(h b (np)π + π − ) σ(Υ(2S )π + π − ) (n = 1, 2) and the result indicated that the Υ(5S ) → h b (np)π + π − and Υ(5S ) → Υ(2S )π + π − processes have the similar production ratios [19].…”

Section: Introductionmentioning

confidence: 99%

Bottomonium spectrum in the relativistic flux tube model

Chen

Zhang

2020

Phys. Rev. D

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The bottomonium spectrum is far from being established. The structures of higher vector states, including the Υ(10580), Υ(10860), and Υ(11020) states, are still in dispute. In addition, whether the Υ(10750) signal which was recently observed by the Belle Collaboration is a normal bb state or not should be examined. Faced with such situation, we carried out a systematic investigation of the bottomonium spectrum in the scheme of the relativistic flux tube (RFT) model. A Chew-Frautschi like formula was derived analytically for the spin average mass of bottomonium states. We further incorporated the spin-dependent interactions and obtained a complete bottomonium spectrum. We found that the most established bottomonium states can be explained in the RFT scheme. The Υ(10750), Υ(10860), and Υ(11020) could be predominantly the 3 3 D 1 , 5 3 S 1 , and 4 3 D 1 states, respectively. Our predicted masses of 1F and 1G bb states are in agreement with the results given by the method of lattice QCD, which can be tested by experiments in future. We also compared the RFT model with the quark potential model in detail. The differences of these two kinds of models were discussed.

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Section: Introductionmentioning

confidence: 99%

Bottomonium spectrum in the relativistic flux tube model

Chen

Zhang

2020

Phys. Rev. D

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“…The heavy quark fields in this theory are represented by Pauli spinors coupled to gauge fields, and quark-anti-quark pair creation of the heavy quark is not allowed. Lattice NRQCD has been used to study bottomonia properties at zero temperature [18][19][20][21][22][23][24][25]. Attempts to calculate bottomonia spectral functions at non-zero temperatures using lattice NRQCD have also been reported [26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

“…Extended operators are widely used to study quarkonia properties at zero temperature [18][19][20][21][22][23][24][25]. Correlators of extended operators have a better projection onto quarkonium states and are less sensitive to the continuum, i.e., the bound-state contribution to these correlators is sig-nificantly larger.…”

Section: Introductionmentioning

confidence: 99%

Thermal broadening of bottomonia: Lattice nonrelativistic QCD with extended operators

et al. 2019

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We present lattice non-relativistic QCD calculations of bottomonia correlation functions at temperatures T 150 − 350 MeV. The correlation functions were computed using extended bottomonia operators, and on background gauge-field configurations for 2+1-flavor QCD having physical kaon and nearly-physical pion masses. We analyzed these correlation functions based on simple theoretically-motivated parameterizations of the corresponding spectral functions. The results of our analyses are compatible with significant in-medium thermal broadening of the ground state Sand P-wave bottomonia. arXiv:1908.08437v1 [hep-lat]

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“…Naturally first principle calculations using lattice QCD are quite essential to study these hadrons. However, unlike quarkonia, lattice study of bc hadrons are confined only to a few calculations [58,[63][64][65][66]. In this work we carry out a detailed lattice calculation of the ground state energy spectra of all low lying bc hadrons (showed in Table I) with very good control over systematics and predict their masses most precisely to this date.…”

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confidence: 99%

Precise Predictions of Charmed-Bottom Hadrons from Lattice QCD

2018

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We report the ground state masses of hadrons containing at least one charm and one bottom quark using lattice quantum chromodynamics. These include mesons with spin (J)-parity (P ) quantum numbers (J P ): 0 − , 1 − , 1 + and 0 + and the spin-1/2 and 3/2 baryons. Among these hadrons only the ground state of 0 − is known experimentally and therefore our predictions provide important information for the experimental discovery of all other hadrons with these quark contents. PACS numbers: 12.38.Gc, 14.20.Lq Recently heavy hadron physics has attracted huge scientific interests mainly due to the prospects of studying new physics beyond the Standard Model at the intensity frontier [1][2][3][4][5], and to study various newly discovered subatomic particles to better understand the confining nature of strong interactions [6][7][8][9][10][11][12]. From the perspective of newly found hadrons itself, a large number of discoveries over the past decade ranging from usual mesons [13][14][15][16][17][18][19][20], baryons [21] along with their excited states [22][23][24][25], to new exotic particles like tetraquarks [26-28] and pentaquarks [29], as well as hadrons whose structures are still elusive [6][7][8][30][31][32][33], have proliferated interests in the study of heavy hadrons. Furthermore, it is envisaged that the large data already collected or to be obtained at different laboratories, particularly at LHCb and Belle II, will further unravel many other hadrons. One variety of such theorized but as yet essentially unobserved (except one) subatomic particles are hadrons made of at least a charm and a bottom quarks, the charmed-bottom (bc) hadrons.Investigations of such hadrons are highly appealing, as they provide a unique laboratory to explore the heavy quark dynamics at multiple scales: 1/m b , 1/m c and 1/Λ QCD . Decay constants and form factors of bc mesons are still unknown but are quite important because of their relevance to investigate physics beyond the standard model, particularly in view of the recent measurement of R(J/ψ) [34]. The information on spin splittings and decay constants can shed light on their structures and help us to understand the nature of strong interactions at multiple scales. Moreover, bc baryon decays can aid in studying b → c transition and |V cb | element of the CKM matrix.However, to date the discovery of these hadrons is limited to only two observations: B c (0 − ) with mass 6275(1) MeV [35] and B c (2S)(0 − ) at 6842(6) MeV [36] while the latter has not yet been confirmed [37]. On the other hand, LHC being an efficient factory for producing bc hadrons [38,39], one would envisage for their discovery and study their decays in near future. Precise theoretical predictions related to the energy spectra and decay of these hadrons are thus utmost essential to guide their discovery.In fact various model calculations exist in literatures on bc mesons [40][41][42][43][44][45][46] and baryons [47][48][49][50][51][52][53]. However, those predictions vary widely, e.g. 1S-hyperfine splitting in B c (bc...

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Free-form smearing for bottomonium andBmeson spectroscopy

Cited by 32 publications

References 37 publications

Bottomonium spectrum in the relativistic flux tube model

Bottomonium spectrum in the relativistic flux tube model

Thermal broadening of bottomonia: Lattice nonrelativistic QCD with extended operators

Precise Predictions of Charmed-Bottom Hadrons from Lattice QCD

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