LHCb Collaboration

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doi:10.1016/s0375-9474(17)30380-9

Cited by 210 publications

(454 citation statements)

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“…Above this mass, two further 1 ++ states were reported, χ c1 (4140) and χ c1 (4274). Both are seen in B ± → J/ψφK ± decays, the former state by several collaborations [35][36][37][38][39] (only the latest reference of the collaborations are given here), the latter one by CDF [38] and LHCb [39].…”

Section: Reactionmentioning

confidence: 99%

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Are the XYZ states unconventional states or conventional states with unconventional properties?

Hanhart

Klempt

2020

Int. J. Mod. Phys. A

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We discuss three possible scenarios for the interpretation of mesons containing a heavy quark and its antiquark near and above the first threshold for a decay into a pair of heavy mesons in a relative S-wave. View I assumes that these thresholds force the quark potential to flatten which implies that while in these energy ranges molecular states may be formed there should not be any quarkanti-quark states above these thresholds. View II assumes that the main part of the interaction between two mesons is due to the poles which originate from the QQ interaction. The properties of the QQ mesons are strongly influenced by opening thresholds but the number of states is given by the quark model. In View III, both types of mesons are admitted also near and above the open flavor thresholds: QQ mesons and dynamically generated mesons. Experimental consequences of these different views are discussed.

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Section: Reactionmentioning

confidence: 99%

“…The LHCb paper [39] is based on the largest data sample. The amplitude analysis of the reaction B + → K + φJ/ψ and φ → K + K − included the known excited kaon and four ωJ/ψ resonances.…”

Section: Reactionmentioning

confidence: 99%

Are the XYZ states unconventional states or conventional states with unconventional properties?

Hanhart

Klempt

2020

Int. J. Mod. Phys. A

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“…[22,38] using the following two conditions: (i) the pentaquark wave function should be a color singlet and (ii) the wave function of the four-quark subsystem should be antisymmetric. The permutation symmetry of four-quark states is characterized by the S 4 Young tableaux [4], [31], [22], [211] and [1111] or, equivalently, by the irreducible representations of the tetrahedral group T d (which is isomorphic to S 4 ) as A 1 , F 2 , E, F 1 and A 2 , respectively. The first condition that the pentaquark wave function has to be a color-singlet, implies that the color wave function of the four-quark configuration has to be a [211] triplet with F 1 symmetry under T d .…”

Section: Pentaquark Statesmentioning

confidence: 99%

“…The observation of hidden-charm pentaquark states by the LHCb Collaboration [1]- [4] has created an avalanche of theoretical studies on the nature of these states and on different plausible interpretations of the observed signals, e.g. kinematical effects [5,6,7], molecular states [8]- [14] and compact pentaquarks [15]- [22].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic couplings of pentaquarks

Ortiz-Pacheco

Bijker

2019

J. Phys.: Conf. Ser.

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“…An analysis of the Bose-Einstein correlation (BEC) reported by LHCb collaboration [1] is an interesting prospect because the data are measured in the forward region (2.0 < η < 4.8) at 7 TeV, and the number of data points is large (390). In the report of the BEC, the authors used the following conventional formula:…”

Section: Introductionmentioning

confidence: 99%

Analysis of Bose–Einstein correlation at 7 TeV by LHCb collaboration based on stochastic approach

Mizoguchi

Biyajima

2020

Int. J. Mod. Phys. A

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The Bose-Einstein correlation (BEC) in forward region (2.0 < η < 4.8) measured at 7 TeV in the Large Hadron Collider (LHC) by the LHCb collaboration is analyzed using two conventional formulas of different types named CFI and CFII. The first formula is well known and contains the degree of coherence (λ) and the exchange function E 2 BE from the BE statistics. The second formula is an extended formula (CFII) that contains the second degree of coherence λ2 and the second exchange function E 2 BE 2 in addition to CFI. To examine the physical meaning of the parameters estimated by CFII, we analyze the LHCb BEC data by using a stochastic approach of the three-negative binomial distribution and the three-generalized Glauber-Lachs formula. Our results reveal that the BEC at 7 TeV consisted of three activity intervals defined by the multiplicity n ( [8,18], [19, 35], and [36, 96]) can be well explained by CFII.

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LHCb Collaboration

Cited by 210 publications

References 0 publications

Are the XYZ states unconventional states or conventional states with unconventional properties?

Are the XYZ states unconventional states or conventional states with unconventional properties?

Electromagnetic couplings of pentaquarks

Analysis of Bose–Einstein correlation at 7 TeV by LHCb collaboration based on stochastic approach

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