Mon·Aug 31, 2015Monday·August 31, 2015

1. 01*

   The electron in three-dimensional momentum space

   Alessandro Bacchetta🇮🇹 · Luca Mantovani🇮🇹 · Barbara Pasquini (Pavia U. and INFN, Pavia)🇮🇹

   We study the electron as a system composed by an electron and a photon, using lowest order perturbation theory. We derive the leading-twist transverse-momentum-dependent distribution functions for both the electron and photon in the dressed electron, thereby offering a three-dimensional description of the dressed electron in momentum space. To obtain the distribution functions, we apply both the formalism of light-front wave function overlap representation and the diagrammatic approach. We perform the calculations both in light-cone gauge and Feynman gauge, and we present a detailed discussion of the role of the Wilson lines to obtain gauge-independent results. We provide numerical results and plots for many of the computed distributions.

   hep-phnucl-thPRD(2016)·21 citations
2. 02*

   On the Impact of Lepton PDFs

   Valerio Bertone🇨🇭 · Stefano Carrazza🇮🇹 · Davide Pagani🇧🇪 · Marco Zaro🇫🇷

   In this paper we discuss the effect of the complete leading-order QED corrections to the DGLAP equations in the perturbative evolution of parton distribution functions (PDFs). This requires the extension of the purely QCD DGLAP evolution, including a PDF for the photons and, consistently, also for the charged leptons $e^{\pm }$, ${\mu }^{\pm }$ and ${\tau }^{\pm }$. We present the implementation of the QED-corrected DGLAP evolution in the presence of photon and lepton PDFs in the APFEL program and, by means of different assumptions for the initial scale PDFs, we produce for the first time PDF sets containing charged lepton distributions. We also present phenomenological studies that aim to assess the impact of the presence of lepton PDFs in the proton for some relevant SM (and BSM) processes at the LHC at 13 TeV and the FCC-hh at 100 TeV. The impact of the photon PDF is also outlined for those processes.

   hep-phhep-exJHEP(2015)·54 citations
3. 03*

   Predictions for Lepton Flavor Universality Violation in Rare B Decays in Models with Gauged $L_{\mu }-L_{\tau }$

   Wolfgang Altmannshofer🇨🇦 · Itay Yavin🇨🇦

   A recent proposal for explaining discrepancies in angular observables in the rare decay B --> K*mu+mu- with a gauged L_mu - L_tau current carried with it the prediction of lepton flavor universality violation in related B-meson decays. This prediction gained empirical support with a subsequent hint for lepton flavor universality violation in the B --> K l+l- decay by LHCb. In this short paper we fully quantify the prediction including the associated uncertainties. We also provide new predictions for a variety of additional observables sensitive to lepton flavor universality violation in B-meson decays.

   hep-phhep-exPRD(2015)·118 citations
4. 04*

   The Zbb Couplings at Future e+e- Colliders

   Stefania Gori🇨🇦 · Jiayin Gu🇨🇳 · Lian-Tao Wang🇺🇸

   Many new physics models predict sizable modifications to the SM Zbb couplings, while the corresponding measurements at LEP and SLC exhibit some discrepancy with the SM predictions. After updating the current results on the Zbb coupling constraints from global fits, we list the observables that are most important for improving the Zbb coupling constraints and estimate the expected precision reach of three proposed future e+e- colliders, CEPC, ILC and FCC-ee. We consider both the case that the results are SM-like and the one that the Zbb couplings deviate significantly from the SM predictions. We show that, if we assume the value of the Zbb couplings to be within 68% CL of the current measurements, any one of the three colliders will be able to rule out the SM with more than 99.9999% CL (5 sigma). We study the implications of the improved Zbb coupling constraints on new physics models, and point out their complementarity with the constraints from the direct search of new physics particles at the LHC, as well as with Higgs precision measurements. Our results provide a further motivation for the construction of future e+e- colliders.

   hep-phhep-exJHEP(2016)·41 citations
5. 05*

   Fundamental Composite 2HDM: SU(N) with 4 flavours

   Teng Ma🇨🇳 · Giacomo Cacciapaglia🇫🇷

   We present a new model of composite Higgs based on a gauged SU(N) group with 4 Dirac fermions in the fundamental representation. At low energy, the model has a global symmetry SU(4)$\times$SU(4) broken to the diagonal SU(4), containing 2 Higgs doublets in the coset. We study in detail the generation of the top mass via 4-fermion interactions, and the issue of the vacuum alignment. In particular, we prove that, without loss of generality, the vacuum can always be aligned with one doublet. Under certain conditions on the top pre-Yukawas, the second doublet, together with the additional triplets, is stable and can thus play the role of Dark Matter. This model can therefore be an example of composite inert-2HDM model.

   hep-phJHEP(2016)·104 citations
6. 06*

   Lepton Flavor Violating Radiative Decays in EW-Scale ${\nu }_R$ Model: An Update

   P. Q. Hung🇺🇸 · Trinh Le🇺🇸 · Van Que Tran🇹🇼 · Tzu-Chiang Yuan🇹🇼

   We perform an updated analysis for the one-loop induced lepton flavor violating radiative decays $l_i\to l_j\gamma$ in an extended mirror model. Mixing effects of the neutrinos and charged leptons constructed with a horizontal $A_4$ symmetry are also taken into account. Current experimental limit and projected sensitivity on the branching ratio of $\mu \to e\gamma$ are used to constrain the parameter space of the model. Calculations of two related observables, the electric and magnetic dipole moments of the leptons, are included. Implications concerning the possible detection of mirror leptons at the LHC and the ILC are also discussed.

   hep-phJHEP(2015)·31 citations
7. 07*

   Electromagnetic Heavy Lepton Pair Production in Relativistic Heavy-Ion Collisions

   M. Y. Sengul🇹🇷 · M. C. Guclu🇹🇷 · O. Mercan🇹🇷 · N. G. Karakus🇹🇷

   We calculate the cross sections of electromagnetic productions of muon and tauon pair productions from the ultra-relativistic heavy ion collisions. Since the Compton wavelengths of muon and tauon are comparable to the radius of the colliding ions, nuclear form factors play important roles for calculating the cross sections. Recent measurement [1] indicates that the neutrons are differently distributed from the protons therefore this affects the cross section of the heavy lepton pair production. In order to see the effects of the neutron distributions in the nucleus, we used analytical expression of the Fourier transforms of the Wood-Saxon distribution. Cross section calculations show that Wood-Saxon distribution function is more sensitive to the parameter R compare to the parameter a.

   hep-phnucl-thEPJC(2016)·18 citations
8. 08*

   The $Z_c^{(\prime )}\to {\eta }_c\rho$ decay as a discriminant between tetraquarks and meson molecules

   Angelo Esposito🇺🇸 · Andrea L. Guerrieri🇮🇹 · Alessandro Pilloni🇮🇹

   Understanding the nature of the exotic XYZ resonances is one of the open problems in hadronic spectroscopy. Despite the experimental efforts, the structure of these particles still lacks of an accepted theoretical framework. We propose to use the $Z_c^{(\prime )}\to {\eta }_c\rho$ decays as a possible discriminant between two of the most popular models: the compact tetraquark and the loosely bound meson molecule. We show that the predictions obtained within the two pictures are significantly different and therefore the proposed decay channel might shed some light on the nature of these states.

   hep-ph2 citations
9. 09*

   Revisiting fermion mass and mixing fits in the minimal SUSY $SO(10)$ GUT

   Takeshi Fukuyama🇯🇵 · Koji Ichikawa🇯🇵 · Yukihiro Mimura🇹🇼

   Supersymmetric $SO(10)$ grand unified models with renormalizable Yukawa couplings involving only $10$ and $\overline{126}$ Higgs fields have been shown to realize the fermion masses and mixings economically. In previous works, the sum rule of the fermion mass matrices are given by inputting the quark matrices, and the neutrino mixings are predicted in this framework. Now the three neutrino mixings have been measured, and in this paper, we give the sum rule by inputting the lepton mass matrices, which makes clear certain features of the solution, especially if the vacuum expectation values of $126+\overline{126}$ ($v_R$) are large and the right-handed neutrinos are heavy. We perform the ${\chi }^2$ analyses to fit the fermion masses and mixings using the sum rule. In previous works, the best fit appears at $v_R\sim 10^{13}$ GeV, and the fit at the large $v_R$ scale ($\sim 10^{16}$ GeV) has been less investigated. Our expression of the sum rule has a benefit to understand the flavor structure in the large $v_R$ solution. Using the fit results, we perform the calculation of the $\mu \to e\gamma$ process and the electric dipole moment of electron, and the importance of $v_R$ dependence emerges in low energy phenomena. We also show the prediction of the CP phase in the neutrino oscillations, which can be tested in the near future.

   hep-phPRD(2016)·40 citations
10. 10*

    On the properties of the vacuum expectation value in $R_{\xi }$ gauge and $\overline{R_{\xi }}$ gauge

    Chungku Kim🇰🇷

    We have investigated the gauge dependence of the vacuum expectation value(VEV) both in the $R_{\xi }$ and the $\overline{R_{\xi }}$ gauge in the $\overline{MS}$ scheme. We have found that, in case of the $R_{\xi }$ gauge, the gauge dependence of the VEV should be modified due to the presence of the parameter in the gauge function that should be identified as a VEV in the broken symmetry phase. However the pole mass remains gauge independent.

    hep-phJ.Korean Phys.Soc.(2015)·5 citations
11. 11*

    No Landau-Yang in QCD

    W. Beenakker🇳🇱 · R. Kleiss🇳🇱 · G. Lustermans🇳🇱

    The Landau-Yang theorem, forbidding transition amplitudes between a massive spin-1 particle and two photons, is widely assumed to apply to other massless spin-1 particles. We show that this is not true in Standard-Model QCD, so that for instance antisymmetric colour-octet spin-1 quarkonia can be formed by two on-shell gluons in second-order perturbative QCD.

    hep-ph22 citations
12. 12*

    Single top partner production in the Higgs to diphoton channel in the Littlest Higgs Model with $T$-parity

    Ning Liu🇨🇳 · Lei Wu🇦🇺 · Bingfang Yang🇨🇳 · Mengchao Zhang🇨🇳

    The top partner as a hallmark of the Littlest Higgs model with $T$-parity (LHT model) has been extensively searched for during the Large Hadron Collider (LHC) Run-1. With the increasing mass limits on the top partner, the single production of the top partner will be dominant over the pair production. Under the constraints from the Higgs data, the electroweak precision observables and $R_b$, we find that the mass of $T$-even top partner ($T_{+}$) has to be heavier than 730 GeV. Then, we investigate the observability of the single $T$-even top partner production through the process $pp\to T_{+}j$ with the sequent decay $T_{+}\to th$ in the di-photon channel in the LHT model at the LHC. We find that the mass of $T_{+}$ can be excluded up to 800 GeV at $2\sigma$ level at 14 TeV LHC with the integrated luminosity $\mathcal{L}=3$ ab${}^{-1}$.

    hep-phhep-exPLB(2016)·36 citations
13. 13*

    NNLO contributions to inclusive-jet production in DIS and determination of \alpha_s

    T. Biekötter🇩🇪 · M. Klasen (Univ. Münster)🇩🇪 · G. Kramer (Univ. Hamburg)🇩🇪

    We present the first calculation of inclusive jet production in deep-inelastic scattering with approximate next-to-next-to-leading order (aNNLO) contributions, obtained from a unified threshold resummation formalism. The leading coefficients are computed analytically. We show that the aNNLO contributions reduce the theoretical prediction for jet production in deep-inelastic scattering, improve the description of the final HERA data in particular at high photon virtuality Q^2 and increase the central fit value of the strong coupling constant.

    hep-phPRD(2015)·21 citations
14. 14*

    The Standard Model cross-over on the lattice

    Michela D'Onofrio (1 and 2)🇨🇭 · Kari Rummukainen (2) ((1) University of Bern, (2) University of Helsinki)🇫🇮

    With the physical Higgs mass the Standard Model symmetry restoration phase transition is a smooth cross-over. We study the thermodynamics of the cross-over using numerical lattice Monte Carlo simulations of an effective SU(2) X U(1) gauge + Higgs theory, significantly improving on previously published results. We measure the Higgs field expectation value, thermodynamic quantities like pressure, energy density, speed of sound and heat capacity, and screening masses associated with the Higgs and Z fields. While the cross-over is smooth, it is very well defined with a width of only approximately 5 GeV. We measure the cross-over temperature from the maximum of the susceptibility of the Higgs condensate, with the result $T_c=159.5\pm 1.5$ GeV. Outside of the narrow cross-over region the perturbative results agree well with non-perturbative ones.

    hep-phastro-ph.COhep-latPRD(2016)·279 citations
15. 15*

    The light scalar mesons as tetraquarks

    Gernot Eichmann🇩🇪 · Christian S. Fischer🇩🇪 · Walter Heupel🇩🇪

    We present a numerical solution of the four-quark Bethe-Salpeter equation for ground-state scalar tetraquarks with J^PC = 0^++. We find that the four-body equation dynamically generates pseudoscalar-meson poles in the Bethe-Salpeter amplitude. The resulting tetraquarks are genuine four-quark states that are dominated by pseudoscalar meson-meson correlations. Diquark-antidiquark contributions are subleading because of their larger mass scale. In the light quark sector, the sensitivity of the tetraquark wave function to the pion poles leads to an isoscalar tetraquark mass M_sigma ~ 350 MeV which is comparable to that of the sigma/f0(500). The masses of its multiplet partners kappa and a0/f0 follow a similar pattern. This provides support for a tetraquark interpretation of the light scalar meson nonet in terms of 'meson molecules'.

    hep-phhep-latnucl-thPLB(2016)·90 citations
16. 16*

    Light-quarkonium spectra and orbital-angular-momentum decomposition in a Bethe-Salpeter-equation approach

    T. Hilger🇦🇹 · M. Gomez-Rocha🇦🇹 · A. Krassnigg🇦🇹

    We investigate the light quarkonium spectrum using a covariant Dyson-Schwinger-Bethe-Salpeter-equation approach to QCD. We discuss splittings among as well as orbital angular momentum properties of various states in detail and analyze common features of mass splittings with regard to properties of the effective interaction. In particular, we predict the mass of sbars exotic 1-+ states, and identify orbital angular momentum content in the excitations of the rho meson. Comparing our covariant model results, the rho and its second excitation being predominantly S-wave, the first excitation being predominantly D-wave, to corresponding conflicting lattice-QCD studies, we investigate the pion-mass dependence of the orbital-angular-momentum assignment and find a crossing at a scale of $m_{\pi }$ ~ 1.4 GeV. If this crossing turns out to be a feature of the spectrum generated by lattice-QCD studies as well, it may reconcile the different results, since they have been obtained at different values of $m_{\pi }$.

    hep-phEPJC(2017)·35 citations
17. 17*

    Charge and color breaking constraints in the Minimal Supersymmetric Standard Model associated with the bottom Yukawa coupling

    Wolfgang Gregor Hollik🇩🇪

    Testing the stability of the electroweak vacuum in any extension of the Standard Model Higgs sector is of great importance to verify the consistency of the theory. Multi-scalar extensions as the Minimal Supersymmetric Standard Model generically lead to unstable configurations in certain regions of parameter space. An exact minimization of the scalar potential is rather an impossible analytic task. To give handy analytic constraints, a specific direction in field space has to be considered which is a simplification that tends to miss excluded regions, however good to quickly check parameter points. We describe a yet undescribed class of charge and color breaking minima as they appear in the Minimal Supersymmetric Standard Model, exemplarily for the case of non-vanishing bottom squark vacuum expectation values constraining the combination mu Yb in a non-trivial way. Contrary to famous A-parameter bounds, we relate the bottom Yukawa coupling with the supersymmetry breaking masses. Another bound can be found relating soft breaking masses and mu only. The exclusions follow from the tree-level minimization and can change dramatically using the one-loop potential. Estimates of the lifetime of unstable configurations show that they are either extremely short- or long-lived.

    hep-phPLB(2016)·9 citations
18. 18*

    Thermalization, evolution and LHC observables in an integrated hydrokinetic model of A+A collisions

    V.Yu. Naboka🇺🇦 · Iu.A. Karpenko🇺🇦 · Yu.M. Sinyukov🇺🇦

    A further development of the evolutionary picture of A+A collisions, which we call the integrated HydroKinetic Model (iHKM), is proposed. The model comprises a generator of the initial state GLISSANDO, pre-thermal dynamics of A+A collisions leading to thermalization, subsequent relativistic viscous hydrodynamic expansion of quark-gluon and hadron medium (vHLLE), its particlization, and finally hadronic cascade ultrarelativistic QMD. We calculate mid-rapidity charged-particle multiplicities, pion, kaon, and antiproton spectra, charged-particle elliptic flows, and pion interferometry radii for Pb+Pb collisions at the energies available at the CERN Large Hadron Collider, $\sqrt{s}=2.76$ TeV, at different centralities. We find that the best description of the experimental data is reached when the initial states are attributed to the very small initial time 0.1 fm/c, the pre-thermal stage (thermalization process) lasts at least until 1 fm/c, and the shear viscosity at the hydrodynamic stage of the matter evolution has its minimal value, $\eta /s=\frac{1}{4\pi }$. At the same time it is observed that the various momentum anisotropies of the initial states, different initial and relaxation times, as well as even a treatment of the pre-thermal stage within just viscous or ideal hydrodynamic approach, leads sometimes to worse but nevertheless similar results, if the normalization of maximal initial energy density in most central events is adjusted to reproduce the final hadron multiplicity in each scenario. This can explain a good enough data description in numerous variants of hybrid models without a prethermal stage when the initial energy densities are defined up to a common factor.

    hep-phnucl-thPRC(2016)·28 citations
19. 19*

    Charmed Baryons Circa 2015

    Hai-Yang Cheng🇹🇼

    This is basically the update of [arXiv:0809.1869], a review on charmed baryon physics around 2007. Topics of this review include the spectroscopy, strong decays, lifetimes, nonleptonic and semileptonic weak decays, and electromagnetic decays of charmed baryons.

    hep-phhep-exhep-latnucl-th19 citations
20. 20*

    New physics effects on neutrinoless double beta decay from right-handed current

    Shao-Feng Ge🇩🇪 · Manfred Lindner🇩🇪 · Sudhanwa Patra🇮🇳

    We study the impact of new physics contributions to neutrinoless double beta decay arising from right-handed current in comparison with the standard mechanism. If the light neutrinos obtain their masses from Type-II seesaw within left-right symmetric model, where the Type-I contribution is suppressed to negligible extent, the right-handed PMNS matrix is the same as its left-handed counterpart, making it highly predictable and can be tested at next-generation experiments. It is very attractive, especially with recent cosmological constraint favoring the normal hierarchy under which the neutrinoless double beta decay is too small to be observed unless new physics appears as indicated by the recent diboson excess observed at ATLAS. The relative contributions from left- and right-handed currents can be reconstructed with the ratio between lifetimes of two different isotopes as well as the ratio of nuclear matrix elements. In this way, the theoretical uncertainties in the calculation of nuclear matrix elements can be essentially avoided. We also discuss the interplay of neutrinoless double beta decay measurements with cosmology, beta decay, and neutrino oscillation.

    hep-phhep-exnucl-exnucl-thJHEP(2015)·51 citations
21. 21*

    The contribution of NLO and LPM corrections to thermal dilepton emission in heavy ion collisions

    Yannis Burnier🇨🇭 · Chiara Gastaldi🇨🇭

    Recently lots of efforts have been made to obtain the next to leading order and Landau-Pomeranchuk-Migdal corrections to the thermal dilepton emission rate in perturbative QCD. Here we apply these results to the plasma created in heavy ion collisions and see wether these corrections improve the comparison between theoretical calculations and experimental results for the invariant mass dependence of the dilepton emission rate. In particular, we simulate the quark-gluon plasma produced at RHIC and LHC using a 2+1-dimensional viscous hydro model. We compare our results to STAR experiment and comment on the need for a non-perturbative determination of the dilepton rate at low invariant mass.

    ↳ nucl-thhep-phnucl-exPRC(2016)·12 citations
22. 22*

    Constraints on Lorentz violation from gravitational Cherenkov radiation

    Alan Kostelecky🇺🇸 · Jay D. Tasson🇺🇸

    Limits on gravitational Cherenkov radiation by cosmic rays are obtained and used to constrain coefficients for Lorentz violation in the gravity sector associated with operators of even mass dimensions, including orientation-dependent effects. We use existing data from cosmic-ray telescopes to obtain conservative two-sided constraints on 80 distinct Lorentz-violating operators of dimensions four, six, and eight, along with conservative one-sided constraints on three others. Existing limits on the nine minimal operators at dimension four are improved by factors of up to a billion, while 74 of our explicit limits represent stringent first constraints on nonminimal operators. Prospects are discussed for future analyses incorporating effects of Lorentz violation in the matter sector, the role of gravitational Cherenkov radiation by high-energy photons, data from gravitational-wave observatories, the tired-light effect, and electromagnetic Cherenkov radiation by gravitons.

    ↳ gr-qcastro-ph.HEhep-phPLB(2015)·148 citations
23. 23*

    SU(N) Multi-Skyrmions at Finite Volume

    Fabrizio Canfora🇨🇱 · Marco Di Mauro🇮🇹 · Maxim A. Kurkov🇮🇹 · Adele Naddeo🇮🇹

    We study multi-soliton solutions of the four-dimensional SU(N) Skyrme model by combining the hedgehog ansatz for SU(N) based on the harmonic maps of $S^2$ into $C{P}^{N-1}$ and a geometrical trick which allows to analyze explicitly finite-volume effects without breaking the relevant symmetries of the ansatz. The geometric setup allows to introduce a parameter which is related to the 't Hooft coupling of a suitable large $N$ limit, in which $N\to \infty$ and the curvature of the background metric approaches zero, in such a way that their product is constant. The relevance of such a parameter to the physics of the system is pointed out. In particular, we discuss how the discrete symmetries of the configurations depend on it.

    ↳ hep-thhep-phmath-phmath.MP+1EPJC(2015)·29 citations
24. 24*

    Nonrelativistic lattice study of stoponium

    Seyong Kim🇰🇷

    We calculate the bound state properties of stoponium using lattice formulation of nonrelativistic effective field theory for stop which is moving nonrelativistically in the rest frame of stoponium. Our calculation method is similar to that employed in lattice nonrelativistic quantum chromodynamics (NRQCD) studies for charmonium and bottominum. Using $16^3\times 256$ quenched lattice gauge field configurations at $a^{-1}=50(1)\mathrm{GeV}$, we obtain the stopoinium mass and the lattice matrix element which is related to the wavefunction at the origin for the $1S$ state and find that the lattice $|R_{1S}(0){|}^2/M_{1S}^3$ is $3.5\sim 4$ larger than that from a potential model calculation for $200\mathrm{GeV}\le M_{1S}\le 800\mathrm{GeV}$.

    ↳ hep-lathep-phPRD(2015)·10 citations
25. 25*

    Lattice study on QCD-like theory with exact center symmetry

    Takumi Iritani🇯🇵 · Etsuko Itou🇯🇵 · Tatsuhiro Misumi🇯🇵

    We investigate QCD-like theory with exact center symmetry, with emphasis on the finite-temperature phase transition concerning center and chiral symmetries. On the lattice, we formulate center symmetric $SU(3)$ gauge theory with three fundamental Wilson quarks by twisting quark boundary conditions in a compact direction ($Z_3$-QCD model). We calculate the expectation value of Polyakov loop and the chiral condensate as a function of temperature on 16^3 x 4 and 20^3 x 4 lattices along the line of constant physics realizing $m_{PS}/m_V=0.70$. We find out the first-order center phase transition, where the hysteresis of the magnitude of Polyakov loop exists depending on thermalization processes. We show that chiral condensate decreases around the critical temperature in a similar way to that of the standard three-flavor QCD, as it has the hysteresis in the same range as that of Polyakov loop. We also show that the flavor symmetry breaking due to the twisted boundary condition gets qualitatively manifest in the high-temperature phase. These results are consistent with the predictions based on the chiral effective model in the literature. Our approach could provide novel insights to the nonperturbative connection between the center and chiral properties.

    ↳ hep-lathep-phhep-thnucl-thJHEP(2015)·38 citations
26. 26*

    Charmed baryons on the lattice

    M. Padmanath🇦🇹 · Nilmani Mathur🇮🇳

    We discuss the significance of charm baryon spectroscopy in hadron physics and review the recent developments of the spectra of charmed baryons in lattice calculations. Special emphasis is given on the recent studies of highly excited charm baryon states. Recent precision lattice measurements of the low lying charm and bottom baryons are also reviewed.

    ↳ hep-lathep-ph20 citations
27. 27*

    Finite Volume for Three-Flavour Partially Quenched Chiral Perturbation Theory through NNLO in the Meson Sector

    Johan Bijnens🇸🇪 · Thomas Rössler (Lund)🇸🇪

    We present a calculation of the finite volume corrections to meson masses and decay constants in three flavour Partially Quenched Chiral Perturbation Theory (PQChPT) through two-loop order in the chiral expansion for the flavour-charged (or off-diagonal) pseudoscalar mesons. The analytical results are obtained for three sea quark flavours with one, two or three different masses. We reproduce the known infinite volume results and the finite volume results in the unquenched case. The calculation has been performed using the supersymmetric formulation of PQChPT as well as with a quark-flow technique. Partial analytical results can be found in the appendices. Some examples of cases relevant to lattice QCD are studied numerically. Numerical programs for all results are available as part of the CHIRON package.

    ↳ hep-lathep-phJHEP(2015)·8 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.