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Author Breso-Pla, V.; Cruz-Alzaga, S.; Gonzalez-Alonso, M.; Prakash, S.
Title EFT analysis of new physics at COHERENT with Dirac neutrinos Type Journal Article
Year 2025 Publication Journal of High Energy Physics Abbreviated Journal (up) J. High Energy Phys.
Volume 12 Issue 12 Pages 007 - 32pp
Keywords Effective Field Theories; Neutrino Interactions; Non-Standard Neutrino Properties
Abstract We study the sensitivity of COHERENT-like experiments to non-standard contributions within the so-called nu WEFT framework. The latter is the most general low-energy effective field theory that includes not only the light SM fields but also additional right-handed Dirac neutrinos. Our analysis includes for the first time flavor-general New Physics effects in neutrino production (pion and muon decays) and neutrino detection (through Coherent Elastic Neutrino-Nucleus Scattering). Despite the generality, the results can be written in compact form and are easy to implement in existing or future analyses using effective nuclear charges. We use current COHERENT data to set constraints on the corresponding effective operators, and we estimate the sensitivity of future measurements.
Address [Breso-Pla, Victor] Heidelberg Univ, Inst Theoret Phys, D-69120 Heidelberg, Germany, Email: breso@thphys.uni-heidelberg.de;
Corporate Author Thesis
Publisher Springer Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Notes WOS:001629864700001 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 6967
Permanent link to this record
 
 
Author Cirigliano, V.; Jenkins, J.P.; Gonzalez-Alonso, M.
Title Semileptonic decays of light quarks beyond the Standard Model Type Journal Article
Year 2010 Publication Nuclear Physics B Abbreviated Journal (up) Nucl. Phys. B
Volume 830 Issue 1-2 Pages 95-115
Keywords Semileptonic decays; CKM unitarity; Effective theory; Beyond the Standard Model
Abstract We describe non-standard contributions to semileptonic processes in a model independent way in terms of in SU(2)(L) x U(1)(Y) invariant effective lagrangian at the weak scale, front which we derive the low-energy effective lagrangian governing muon and beta decays. We find that the deviation from Cabibbo universality, Delta(CKM) equivalent to vertical bar V-ud vertical bar(2) + vertical bar V-us vertical bar(2) + vertical bar V-ub vertical bar(2) – 1, receives contributions from four effective operators. The phenomenological bound Delta(CKM) = (-1 +/- 6) x 10(-4) provides strong constraints on all four operators, corresponding to art effective scale Lambda > 11 TeV (90% CL). Depending on the operator, this constraint is at the same level or better then the Z pole observables. Conversely, precision electroweak constraints alone would allow universality violations as large as Delta(CKM) = -0.01 (90% CL). An observed Delta(CKM) not equal 0 at this level Could be explained in terms of a single four-fermion operator which is relatively poorly constrained by electroweak precision measurements.
Address [Cirigliano, Vincenzo; Jenkins, James P.; Gonzalez-Alonso, Martin] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA, Email: cirigliano@lanl.gov
Corporate Author Thesis
Publisher Elsevier Science Bv Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0550-3213 ISBN Medium
Area Expedition Conference
Notes ISI:000275150000003 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ elepoucu @ Serial 497
Permanent link to this record
 
 
Author Abele, H. et al; Algora, A.; Gonzalez-Alonso, M.; Novella, P.
Title Particle physics at the European Spallation Source Type Journal Article
Year 2023 Publication Physics Reports Abbreviated Journal (up) Phys. Rep.
Volume 1023 Issue Pages 1-84
Keywords ESS; Neutrons; NNBAR; ESSnuSB; nEDM
Abstract Presently under construction in Lund, Sweden, the European Spallation Source (ESS) will be the world's brightest neutron source. As such, it has the potential for a particle physics program with a unique reach and which is complementary to that available at other facilities. This paper describes proposed particle physics activities for the ESS. These encompass the exploitation of both the neutrons and neutrinos produced at the ESS for high precision (sensitivity) measurements (searches).
Address [Fynbo, H. O. U.; Uggerhoj, U. I.] Aarhus Univ, Dept Phys & Astron, Aarhus, Denmark, Email: milstead@fysik.su.se
Corporate Author Thesis
Publisher Elsevier Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0370-1573 ISBN Medium
Area Expedition Conference
Notes WOS:001063474900001 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 5685
Permanent link to this record
 
 
Author Gonzalez-Alonso, M.; Pich, A.; Prades, J.
Title Pinched weights and duality violation in QCD sum rules: A critical analysis Type Journal Article
Year 2010 Publication Physical Review D Abbreviated Journal (up) Phys. Rev. D
Volume 82 Issue 1 Pages 014019 - 7pp
Keywords
Abstract We analyze the so-called pinched weights, that are generally thought to reduce the violation of quarkhadron duality in finite-energy sum rules. After showing how this is not true in general, we explain how to address this question for the left-right correlator and any particular pinched weight, taking advantage of our previous work [1], where the possible high-energy behavior of the left-right spectral function was studied. In particular, we show that the use of pinched weights allows to determine with high accuracy the dimension six and eight contributions in the operator-product expansion, O-6 = (-4.3(-0.7)(+0.9)) x 10(-3) GeV6 and O-8 = (-7.2(-5.3)(+4.2)) x 10(-3) GeV8.
Address [Gonzalez-Alonso, Martin; Pich, Antonio] Univ Valencia, CSIC, Dept Fis Teor, E-46071 Valencia, Spain
Corporate Author Thesis
Publisher Amer Physical Soc Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1550-7998 ISBN Medium
Area Expedition Conference
Notes ISI:000280470200001 Approved no
Is ISI yes International Collaboration no
Call Number IFIC @ elepoucu @ Serial 403
Permanent link to this record
 
 
Author Gonzalez-Alonso, M.; Pich, A.; Prades, J.
Title Violation of quark-hadron duality and spectral chiral moments in QCD Type Journal Article
Year 2010 Publication Physical Review D Abbreviated Journal (up) Phys. Rev. D
Volume 81 Issue 7 Pages 074007 - 10pp
Keywords
Abstract We analyze the spectral moments of the V – A two-point correlation function. Using all known short-distance constraints and the most recent experimental data from tau decays, we determine the lowest spectral moments, trying to assess the uncertainties associated with the so-called violations of quark-hadron duality. We have generated a large number of acceptable spectral functions, satisfying all conditions, and have used them to extract the wanted hadronic parameters through a careful statistical analysis. We obtain accurate values for the chi PT couplings L-10 and C-87, and a realistic determination of the dimension six and eight contributions in the operator product expansion, O-6 = (-5.4(-1.6)(+3.6)) . 10(-3) GeV6 and O-8 = d(-8.9-(12.6)(7.4+)) 10(-3) GeV8, showing that the duality-violation effects have been underestimated in previous literature.
Address [Gonzalez-Alonso, Martin; Pich, Antonio] Univ Valencia, CSIC, Dept Fis Teor, E-46071 Valencia, Spain
Corporate Author Thesis
Publisher Amer Physical Soc Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1550-7998 ISBN Medium
Area Expedition Conference
Notes ISI:000277201900025 Approved no
Is ISI yes International Collaboration no
Call Number IFIC @ elepoucu @ Serial 459
Permanent link to this record
 
 
Author Bhattacharya, T.; Cirigliano, V.; Cohen, S.D.; Filipuzzi, A.; Gonzalez-Alonso, M.; Graesser, M.L.; Gupta, R.; Lin, H.W.
Title Probing novel scalar and tensor interactions from (ultra)cold neutrons to the LHC Type Journal Article
Year 2012 Publication Physical Review D Abbreviated Journal (up) Phys. Rev. D
Volume 85 Issue 5 Pages 054512 - 29pp
Keywords
Abstract Scalar and tensor interactions were once competitors to the now well-established V – A structure of the standard model weak interactions. We revisit these interactions and survey constraints from low-energy probes (neutron, nuclear, and pion decays) as well as collider searches. Currently, the most stringent limit on scalar and tensor interactions arise from 0(+) -> 0(+) nuclear decays and the radiative pion decay pi -> e nu gamma, respectively. For the future, we find that upcoming neutron beta decay and LHC measurements will compete in setting the most stringent bounds. For neutron beta decay, we demonstrate the importance of lattice computations of the neutron-to-proton matrix elements to setting limits on these interactions, and provide the first lattice estimate of the scalar charge and a new average of existing results for the tensor charge. Data taken at the LHC is currently probing these interactions at the 10(-2) level (relative to the standard weak interactions), with the potential to reach the less than or similar to 10(-3) level. We show that, with some theoretical assumptions, the discovery of a charged spin-0 resonance decaying to an electron and missing energy implies a lower limit on the strength of scalar interactions probed at low energy.
Address [Bhattacharya, Tanmoy; Cirigliano, Vincenzo; Graesser, Michael L.; Gupta, Rajan] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA
Corporate Author Thesis
Publisher Amer Physical Soc Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1550-7998 ISBN Medium
Area Expedition Conference
Notes WOS:000302171900002 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 966
Permanent link to this record
 
 
Author Filipuzzi, A.; Portoles, J.; Gonzalez-Alonso, M.
Title U(2)^5 flavor symmetry and lepton universality violation in W -> tau(nu)over-bar(tau) Type Journal Article
Year 2012 Publication Physical Review D Abbreviated Journal (up) Phys. Rev. D
Volume 85 Issue 11 Pages 116010 - 10pp
Keywords
Abstract The seeming violation of universality in the tau lepton coupling to the W boson suggested by LEP-II data is studied using an effective field theory (EFT) approach. Within this framework we explore how this feature fits into the current constraints from electroweak precision observables using different assumptions about the flavor structure of New Physics, namely [U(2) x U(1)](5) and U(2)(5). We show the importance of leptonic and semileptonic tau decay measurements, giving 3-4 TeV bounds on the New Physics effective scale at 90% C.L. We conclude under very general assumptions that it is not possible to accommodate this deviation from universality in the EFT framework, and thus such a signal could only be explained by the introduction of light degrees of freedom or New Physics strongly coupled at the electroweak scale.
Address [Filipuzzi, Alberto; Portoles, Jorge] CSIC Univ Valencia, IFIC, Dept Fis Teor, E-46071 Valencia, Spain
Corporate Author Thesis
Publisher Amer Physical Soc Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1550-7998 ISBN Medium
Area Expedition Conference
Notes WOS:000305680800020 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 1074
Permanent link to this record
 
 
Author Gonzalez-Alonso, M.; Pich, A.; Rodriguez-Sanchez, A.
Title Updated determination of chiral couplings and vacuum condensates from hadronic tau decay data Type Journal Article
Year 2016 Publication Physical Review D Abbreviated Journal (up) Phys. Rev. D
Volume 94 Issue 1 Pages 014017 - 14pp
Keywords
Abstract We analyze the lowest spectral moments of the left-right two-point correlation function, using all known short-distance constraints and the recently updated ALEPH V – A spectral function from tau decays. This information is used to determine the low-energy couplings L-10 and C-87 of chiral perturbation theory and the lowest-dimensional contributions to the operator product expansion of the left-right correlator. A detailed statistical analysis is implemented to assess the theoretical uncertainties, including violations of quark-hadron duality.
Address [Gonzalez-Alonso, Martin] CNRS, IPN Lyon, F-69622 Villeurbanne, France
Corporate Author Thesis
Publisher Amer Physical Soc Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 2470-0010 ISBN Medium
Area Expedition Conference
Notes WOS:000379653200003 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 2755
Permanent link to this record
 
 
Author Cirigliano, V.; Falkowski, A.; Gonzalez-Alonso, M.; Rodriguez-Sanchez, A.
Title Hadronic tau Decays as New Physics Probes in the LHC Era Type Journal Article
Year 2019 Publication Physical Review Letters Abbreviated Journal (up) Phys. Rev. Lett.
Volume 122 Issue 22 Pages 221801 - 7pp
Keywords
Abstract We analyze the sensitivity of hadronic tau decays to nonstandard interactions within the model-independent framework of the standard model effective field theory. Both exclusive and inclusive decays are studied, using the latest lattice data and QCD dispersion relations. We show that there are enough theoretically clean channels to disentangle all the effective couplings contributing to these decays, with the tau -> pi pi nu(tau) channel representing an unexpected powerful new physics probe. We find that the ratios of nonstandard couplings to the Fermi constant are bound at the subpercent level. These bounds are complementary to the ones from electroweak precision observables and pp -> tau nu(tau) measurements at the LHC. The combination of tau decay and LHC data puts tighter constraints on lepton universality violation in the gauge boson-lepton vertex corrections.
Address [Cirigliano, Vincenzo] Los Alamos Natl Lab, Theoret Div, Los Alamos, NM 87545 USA
Corporate Author Thesis
Publisher Amer Physical Soc Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0031-9007 ISBN Medium
Area Expedition Conference
Notes WOS:000470885800008 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 4050
Permanent link to this record
 
 
Author Breso-Pla, V.; Cruz-Alzaga, S.; Gonzalez-Alonso, M.; Prakash, S.
Title Muon-Decay Parameters from COHERENT Type Journal Article
Year 2025 Publication Physical Review Letters Abbreviated Journal (up) Phys. Rev. Lett.
Volume 135 Issue 13 Pages 131802 - 6pp
Keywords
Abstract We demonstrate that measurements of coherent elastic neutrino-nucleus scattering at spallation sources are valuable probes of muon-decay physics. Using COHERENT data we derive the first direct constraint on the Michel parameters governing the nu<overline>mu energy distribution. We also discuss future sensitivities, the implications for the Lorentz structure of the interactions mediating muon decay, and the application to other neutrino-production mechanisms like pion decay.
Address [Breso-Pla, Victor] Heidelberg Univ, Inst Theoret Phys, D-69120 Heidelberg, Germany, Email: breso@thphys.uni-heidelberg.de;
Corporate Author Thesis
Publisher Amer Physical Soc Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0031-9007 ISBN Medium
Area Expedition Conference
Notes WOS:001578794600002 Approved no
Is ISI yes International Collaboration yes
Call Number IFIC @ pastor @ Serial 6864
Permanent link to this record