Opportunities in Flavour Physics at the HL-LHC and HE-LHC

Cerri, A.; Gligorov, V. V.; Malvezzi, S.; Camalich, J. Martin; Zupan, J.; Akar, S.; Alimena, J.; Allanach, B. C.; Altmannshofer, W.; Anderlini, L.; Archilli, F.; Azzi, P.; Banerjee, S.; Barter, W.; Barton, A. E.; Bauer, M.; Belyaev, I.; Benson, S.; Bettler, M.; Bhattacharya, R.; Bifani, S.; Birnkraut, A.; Bishara, F.; Blake, T.; Blusk, S.; Boos, E.; Borsato, M.; Bozzi, C.; Bragagnolo, A.; Brod, J.; Brodzicka, J.; Buras, A. J.; Cadamuro, L.; Carbone, A.; Carena, M.; Carli, I.; Carmona, A.; Cavallo, F. R.; Celis, A.; Cepeda, M.; Chahal, G. S.; Chala, M.; Charles, J.; Charles, M.; Chen, K. F.; Chobanova, V.; Chrzaszcz, M.; Ciezarek, G.; Cirigliano, V.; Ciuchini, M.; Cliff, H.; Cogan, J.; Colangelo, G.; Contu, A.; Covarelli, R.; Cowan, G.; Crivellin, A.; D'Ambrosio, G.; D'Onofrio, M.; Dang, N. P.; Davis, A.; Francisco, O. A. De Aguiar; De Bruyn, K.; De Sanctis, U.; De la Torre, H.; Dekens, W.; Deliot, F.; Della Morte, M.; Demers, S.; Derkach, D.; Deschamps, O.; Descotes-Genon, S.; Dettori, F.; Di Canto, A.; Dinardo, M.; Dini, P.; Dordei, F.; Dorigo, M.; Reis, A. dos; Dudko, L.; Dufour, L.; Durieux, G.; Dutta, S.; Dziurda, A.; Eitschberger, U.; Esposito, A.; Estevez, M.; Fajfer, S.; Falkowski, A.; Faroughy, D. A.; Fedi, G.; Fiorendi, S.; Fiori, F.; Fitzpatrick, C.; Fleischer, R.; Fontana, M.; Fox, P. J.; Freytsis, M.; Gámiz, E.; Gabriel, E.; Gambino, P.; Pardiñas, J. García; Geng, L. S.; Gersabeck, E.; Gersabeck, M.; Gershon, T.; Gilbert, A.; Gonzalez-Alonso, M.; Govoni, P.; Graziani, G.; Greljo, A.; Grillo, L.; Grinstein, B.; Grohsjean, A.; Grossman, Y.; Guadagnoli, D.; Guo, F. -K.; Guzzi, L.; Haller, J.; Hamilton, B.; Han, T.; Harnik, R.; Hill, D.; Hiller, G.; Hoepfner, K.; Hogan, J. M.; Hurth, T.; Igonkina, O.; Ilten, P.; Isidori, G.; Jain, Sa.; John, M.; Johnson, D.; Jung, M.; Jurik, N.; Jäger, S.; Kado, M.; Kagan, A. L.; Kamenik, J. F.; Karliner, M.; Kenzie, M.; Khanji, B.; Kieseler, J.; Kitahara, T.; Klijnsma, T.; Knecht, M.; Košnik, N.; Kogler, R.; Koppenburg, P.; Korytov, A.; Kreps, M.; Langenbruch, C.; Langenegger, U.; Latham, T.; Lebed, R. F.; Lenz, A. J.; Leonardo, N.; Leroy, O.; Li, Q.; Li, T.; Ligabue, F.; Ligeti, Z.; Long, K.; Lunghi, E.; Mahmoudi, F.; Mancinelli, G.; Mandrik, P.; Mannel, T.; Marcano, X.; Marchand, J. F.; Santos, D. Martínez; Martin, A.; Martinelli, M.; Vidal, F. Martinez; Marzocca, D.; Matias, J.; Cuevas, P. Matorras; Matsedonskyi, O.; Mauri, A.; Mazumdar, K.; Merk, M.; Meyer, A. B.; Michielin, E.; Mitselmakher, G.; Mittnacht, L.; Monteil, S.; Morello, M. J.; Morgenstern, M.; Narain, M.; Nardecchia, M.; Needham, M.; Neri, N.; Neubert, M.; Neubert, S.; Nierste, U.; Nieves, J.; Nir, Y.; Nisati, A.; O'Hanlon, D. P.; Oset, E.; Owen, P.; Ozcelik, O.; Griso, S. Pagan; Cortezon, E. Palencia; Palla, F.; Palutan, M.; Pappagallo, M.; Parkes, C.; Pascoli, S.; Passaleva, G.; Passemar, E.; Patel, M.; Pearce, A.; Pedro, K.; Perazzini, S.; Perfilov, M.; Perrozzi, L.; Pescatore, L.; Petersen, B. A.; Petrov, A. A.; Pich, A.; Pilloni, A.; Polci, F.; Polosa, A. D.; Prelovsek, S.; Navarro, A. Puig; Punzi, G.; Rademacker, J.; Rama, M.; Reboud, M.; Reimers, A.; Reznicek, P.; Robinson, D. J.; Rosner, J. L.; Ruiz, R.; Saito, S.; Sarkar, S.; Savin, A.; Sawant, S.; Schacht, S.; Schlaffer, M.; Schmidt, A.; Schneider, B.; Schopper, A.; Schune, M. H.; Segovia, J.; Selvaggi, M.; Serra, N.; Servant, G.; Sestini, L.; Shih, D.; Coutinho, R. Silva; Silvestrini, L.; Skovpen, K.; Skwarnicki, T.; Smizanska, M.; Soni, A.; Soreq, Y.; Spannowsky, M.; Spradlin, P.; Stamou, E.; Stone, S.; Stracka, S.; Straub, D. M.; Szczepaniak, A. P; T'Jampens, S.; Takahashi, Y.; Teubert, F.; Thomas, E.; Tisserand, V.; Torre, R.; Tresoldi, F.; Tsiakkouri, D.; Turchikhin, S.; Ulmer, K. A.; Vagnoni, V.; van Dyk, D.; van Tilburg, J.; Vecchi, S.; Venditti, R.; Vesterinen, M.; Virto, J.; Volkov, P.; Vorotnikov, G.; Vryonidou, E.; Walder, J.; Walkowiak, W.; Wang, J.; Wang, W.; Weiland, C.; Whitehead, M.; Wilkinson, G.; Williams, J. M.; Williams, M. R. J.; Wilson, F.; Xie, Y.; Yang, Z.; Yazgan, E.; You, T.; Yu, F.; Zhang, C.; Zhang, L.; Zhang, W.

doi:10.48550/arxiv.1812.07638

Cited by 72 publications

(117 citation statements)

References 1,315 publications

(2,078 reference statements)

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“…At the LHC, a large number of ground-state Λ b baryons are produced [113], and its decays into charmed baryons can be used to constrain violations of LFU. These decays are of interest in light of the R(D ( * ) ) puzzle in the semileptonic B → D ( * ) τ ντ decays (see for instance the discussion in [114], and references therein). Decays involving the ground state charmed baryon, Λ c , have been already studied in lattice QCD [115] and beyond the Standard Model [116].…”

Section: A Infinite Heavy Quark Mass Limitmentioning

confidence: 99%

$Λ_b$ decays into $Λ_c^\ell\barν_\ell$ and $Λ_c^π^-$ $[Λ_c^*=Λ_c(2595)$ \& $Λ_c(2625)]$ and heavy quark spin symmetry

Nieves,

Pavao,

Sakai

2019

Preprint

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We study the implications for Λ b → Λ * c ν and Λ b → Λ * c π − [Λ * c = Λc(2595) and Λc(2625)] decays that can be deduced from heavy quark spin symmetry (HQSS). Identifying the odd parity Λc(2595) and Λc(2625) resonances as HQSS partners, with total angular momentum-parity j P q = 1 − for the light degrees of freedom, we find that the ratios Γ 2625) ν ) agree, within errors, with the experimental values given in the Review of Particle Physics. We discuss how future, and more precise, measurements of the above branching fractions could be used to shed light into the inner HQSS structure of the narrow Λc(2595) odd-parity resonance. Namely, we show that such studies would constrain the existence of a sizable j P q = 0 − component in its wave-function, and/or of a two-pole pattern, in analogy to the case of the similar Λ(1405) resonance in the strange sector, as suggested by most of the approaches that describe the Λc(2595) as a hadron molecule. We also investigate the lepton flavor universality ratios Rand discuss how R[Λc(2595)] may be affected by a new source of potentially large systematic errors if there are two Λc(2595) poles.

show abstract

Section: A Infinite Heavy Quark Mass Limitmentioning

confidence: 99%

$Λ_b$ decays into $Λ_c^\ell\barν_\ell$ and $Λ_c^π^-$ $[Λ_c^*=Λ_c(2595)$ \& $Λ_c(2625)]$ and heavy quark spin symmetry

Nieves,

Pavao,

Sakai

2019

Preprint

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“…As the mass of the D * s0 (2317) is significantly lower than its quark model expectation and the quantum number of the X(3872) does not fit into the quark mode, they both seriously challenged the conventional quark model and served as strong candidates for the exotic states. Up to now, tens of exotic candidates [4,5] have been observed and various proposals were put forward about their configurations from theoretical side [6][7][8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…the charged P + c s, in pp collision at √ s = 7 TeV in terms of the transverse momentum p T with Λ = 0.7 GeV. Their ratios relative to the neutral ones, as defined in Eq (12),. are also presented below each figure.…”

mentioning

confidence: 99%

Prompt production of the hidden charm pentaquarks in the LHC

Ling,

Dai,

et al. 2021

Preprint

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Motivated by the observation of the first hidden charm pentaquarks by the LHCb collaboration in 2015 and the updated analysis with an order-of-magnitude larger data set in 2019, we estimate their cross sections for the prompt production as well as their heavy quark spin partners, in the Σ ( * ) c D( * ) hadronic molecular picture, at the center-of-mass energy 7 TeV in the pp collision. Their cross sections are several nb and we would expect several tens hidden charm pentaquark events in the LHC based on its current integrated luminosity. The cross sections show a sizable deviation of the cross sections for hidden charm pentaquarks with the third isospin component I z = + 1 2 (P + c ) from those with I z = − 1 2 (P 0 c ). The cross sections decrease dramatically with the increasing transverse momentum, which indicates that the production dynamics is the non-perturbative strong interaction. Our study can also tell where to search for the missing hidden charm pentaquarks. The confirmation of the complete hidden charm pentaquarks in the heavy quark symmetry would further verify their Σ ( * ) c D( * ) molecular interpretation and exclude other potential explanations, such as the triangle singularity interpretations and compact pentaquarks. In addition, the relative strength among these cross sections for pentaquarks can help us to identify the quantum numbers of the P c (4440) and P c (4457).

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“…In particular measurements of the ratio of the branching ratios Br(B → Kµ + µ − )/Br(B → Ke + e − ) associated with the semi-leptonic transitions b → sµ + µ − , b → se + e − indicate that lepton flavor universality is violated [1,2]. Possible explanations of the effect involve leptoquark states, Z neutral bosons coupled differently to the three fermion families and vector-like generations [3,4,5,6,7].…”

Section: Introductionmentioning

confidence: 99%

$SU(5)\times{U(1)'}$ models with a vector-like fermion family

Karozas,

Leontaris,

Tavellaris

2021

Preprint

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Motivated by experimental measurements indicating deviations from the Standard Model predictions we discuss F-theory inspired models, which, in addition to the three chiral generations contain a vector-like complete fermion family. The analysis takes place in the context of SU( 5) ×U(1) GUT embedded in an E 8 covering group which is associated with the (highest) geometric singularity of the elliptic fibration. In this context, the U(1) is a linear combination of four abelian factors subjected to appropriate anomaly cancellation conditions. Furthermore, we require universal U(1) charges for the three chiral families and different ones for the corresponding fields of the vector-like representations. Under the aforementioned assumptions, we find 192 such models which can be classified into five distinct categories with respect to their specific GUT properties. We exhibit representative examples for each such class and construct the superpotential couplings and the fermion mass matrices. We explore the implications of the vector-like states in low energy phenomenology including the predictions regarding the B-meson anomalies. The rôle of R-parity violating terms appearing in some particular models of the above construction is also discussed.

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Opportunities in Flavour Physics at the HL-LHC and HE-LHC

Cited by 72 publications

References 1,315 publications

$Λ_b$ decays into $Λ_c^\ell\barν_\ell$ and $Λ_c^π^-$ $[Λ_c^*=Λ_c(2595)$ \& $Λ_c(2625)]$ and heavy quark spin symmetry

$Λ_b$ decays into $Λ_c^\ell\barν_\ell$ and $Λ_c^π^-$ $[Λ_c^*=Λ_c(2595)$ \& $Λ_c(2625)]$ and heavy quark spin symmetry

Prompt production of the hidden charm pentaquarks in the LHC

$SU(5)\times{U(1)'}$ models with a vector-like fermion family

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Opportunities in Flavour Physics at the HL-LHC and HE-LHC

Cited by 72 publications

References 1,315 publications

$Λ_b$ decays into $Λ_c^*\ell\barν_\ell$ and $Λ_c^*π^-$ $[Λ_c^*=Λ_c(2595)$ \& $Λ_c(2625)]$ and heavy quark spin symmetry

$Λ_b$ decays into $Λ_c^*\ell\barν_\ell$ and $Λ_c^*π^-$ $[Λ_c^*=Λ_c(2595)$ \& $Λ_c(2625)]$ and heavy quark spin symmetry

Prompt production of the hidden charm pentaquarks in the LHC

$SU(5)\times{U(1)'}$ models with a vector-like fermion family

Contact Info

Product

Resources

About

$Λ_b$ decays into $Λ_c^\ell\barν_\ell$ and $Λ_c^π^-$ $[Λ_c^*=Λ_c(2595)$ \& $Λ_c(2625)]$ and heavy quark spin symmetry

$Λ_b$ decays into $Λ_c^\ell\barν_\ell$ and $Λ_c^π^-$ $[Λ_c^*=Λ_c(2595)$ \& $Λ_c(2625)]$ and heavy quark spin symmetry