Search for the Exotic Meson 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>X</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>5568</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math>
 with the Collider Detector at Fermilab

Aaltonen, T.; Noh, S. Y.; Maestro, P.; Goldin, D.; Gerchtein, E.; Stancari, M.; Errede, S.; Parker, W.; Catastini, P.; Laasanen, A. T.; Datta, M.; Thom, J.; Budagov, I. A.; Cordelli, M.; Latino, G.; Hays, C. P.; Carlsmith, D.; Cauz, D.; Seidel, S. C.; Chlachidze, G.; Wolbers, S.; Dorigo, M.; Punzi, G.; Clark, A.; Tecchio, M.; Yoshida, T.; Dittmann, J.; Introzzi, G.; Ivanov, A.; Gramellini, E.; Annovi, A.; Happacher, F.; Schwarz, Thomas; Bortoletto, D.; Canto, A. Di; Yang, U. K.; Pianori, E.; Hughes, R.; Roser, R.; Müller, Thomas; Piacentino, G.; Wagner, P.; Mazzanti, P.; Flanagan, G.; Teng, P. K.; Barria, P.; Devoto, F.; Beretvas, A.; Joo, K. K.; Cuevas, J.; Shochet, M.; Ristori, L.; Tokár, S.; Mazzacane, A.; Sliwa, K.; Phillips, T. J.; Kim, Shin-Hong; Frisch, H.; Antos̆, J.; Ginsburg, C. M.; Liu, Tiehui Ted; Cremonesi, M.; Bocci, A.; Butti, P.; Bellettini, G.; Apollinari, G.; Grosso-Pilcher, C.; Barnes, V. E.; Prokoshin, F.; Waters, D.; Schmidt, E. 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doi:10.1103/physrevlett.120.202006

Cited by 48 publications

(26 citation statements)

References 13 publications

(23 reference statements)

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“…2) If a hadronic state has a typical exotic quark configuration different from the conventional hadron, we may also definitely categorize it as an exotic state. The reported X(5568) with fully open-flavor content sucd [6,7] is a typical exotic candidate, although no significant is observed by the LHCb collaboration [8], the CMS collaboration of LHC [9], and the CDF collaboration of Fermilab [10]. The above criteria provides us valuable hints to identify exotic hadronic states.…”

Section: Introductionmentioning

confidence: 94%

Exotic triple-charm deuteronlike hexaquarks

et al. 2018

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Adopting the one-boson-exchange model, we perform a systematic investigation of interactions between a doubly charmed baryon ðΞ cc Þ and an S-wave charmed baryon (Λ c , Σ ðÃÞ c , and Ξ ð0;ÃÞ c ). Both the SÀD mixing effect and coupled-channel effect are considered in this work. Our results suggest that there may exist several possible triple-charm deuteronlike hexaquarks. Meanwhile, we further study the interactions between a doubly charmed baryon and an S-wave anticharmed baryon. We find that a doubly charmed baryon and an Swave anticharmed baryon can be easily bound together to form shallow molecular hexaquarks. These heavy flavor hexaquarks predicted here can be accessible at future experiment like LHCb.

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Section: Introductionmentioning

confidence: 94%

Exotic triple-charm deuteronlike hexaquarks

et al. 2018

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“…If it really exists, it might be a compact tetraquark. Unfortunately, the LHCb [40], CMS [41], CDF [42], and ATLAS [43] Collaborations did not confirm this state. The identification of compact tetraquarks along this idea has not been achieved yet.…”

Section: Introductionmentioning

confidence: 99%

Systematic studies of charmonium-, bottomonium-, and Bc -like tetraquark states

Liu

et al. 2019

Phys. Rev. D

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We study the mass splittings of Q1q2Q3q4 (Q = c, b, q = u, d, s) tetraquark states with chromomagnetic interactions between their quark components. Assuming that X(4140) is the lowest J P C = 1 ++ cscs tetraquark, we estimate the masses of the other tetraquark states. From the obtained masses and defined measure reflecting effective quark interactions, we find the following assignments for several exotic states: (1) both X(3860) and the newly observed Zc(4100) seem to be 0 ++ cncn tetraquarks; (2) Zc(4200) is probably a 1 +− cncn tetraquark; (3) Zc(3900), X(3940), and X(4160) are unlikely compact tetraquarks; (4) Zc(4020) is unlikely a compact tetraquark, but seems the hidden-charm correspondence of Z b (10650) with J P C = 1 +− ; and (5) Zc(4250) can be a tetraquark candidate but the quantum numbers cannot be assigned at present. We hope further studies may check the predictions and assignments given here.

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“…In particular, the CMS detector can probe a central kinematic region of B 0 s candidates similar to that of D0, complementing the LHCb search in the forward region. Recently, the CDF and ATLAS Collaborations reported independently negative search results for the X(5568) [6,7], while the D0 Collaboration presented additional evidence for the X(5568) by adding B 0 s mesons reconstructed in semileptonic decays [8]. This Letter presents a search for the X(5568) state performed by the CMS Collaboration at the LHC.…”

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confidence: 99%

Search for the X(5568) State Decaying into Bs0π

Sirunyan¹,

Tumasyan²,

Adam³

et al. 2018

Phys. Rev. Lett.

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A search for resonancelike structures in the B_{s}^{0}π^{±} invariant mass spectrum is performed using proton-proton collision data collected by the CMS experiment at the LHC at sqrt[s]=8 TeV, corresponding to an integrated luminosity of 19.7 fb^{-1}. The B_{s}^{0} mesons are reconstructed in the decay chain B_{s}^{0}→J/ψϕ, with J/ψ→μ^{+}μ^{-} and ϕ→K^{+}K^{-}. The B_{s}^{0}π^{±} invariant mass distribution shows no statistically significant peaks for different selection requirements on the reconstructed B_{s}^{0} and π^{±} candidates. Upper limits are set on the relative production rates of the X(5568) and B_{s}^{0} states times the branching fraction of the decay X(5568)^{±}→B_{s}^{0}π^{±}. In addition, upper limits are obtained as a function of the mass and the natural width of possible exotic states decaying into B_{s}^{0}π^{±}.

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Search for the Exotic Meson X(5568) with the Collider Detector at Fermilab

Cited by 48 publications

References 13 publications

Exotic triple-charm deuteronlike hexaquarks

Exotic triple-charm deuteronlike hexaquarks

Systematic studies of charmonium-, bottomonium-, and Bc -like tetraquark states

Search for the X(5568) State Decaying into Bs0π

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