Post on 27-Mar-2015
Hadronic Physics at
Intermediate Energies
Sevilla, 5 October 2012
Juan M Nieves
Hadron physics aims at understanding the properties of hadrons and their
mutual interactions from QCD (the theory governing the dynamics of quarks, the
constituents of hadrons). This is an ambitious goal and the field is
compartmented into several subfields that basically study the phases and
structures of QCD at their various levels of complexity.
Typical topics in hadron physics:
Chiral Perturbation Theory
Effective Field Theory
Baryon Resonance Structure and Quark Models
Exotic Hadrons
Hadron Properties from Lattice QCD
Spectroscopy of light and heavy quark hadrons
Quarkonia
Glueballs, hybrids and multiquarks
Hadrons in matter
Heavy ion collisions
.
.
.
EXPERIMENTS
BNL, RHIC
Jlab
MiniBooNE, Minera
BaBar, CLEO
KEK
JPARC
T2K
BELLE, BES
Dane-Frascati
MAMI-Mainz, ELSA-Bonn
HADES
COMPASS
COSY-JÜLICH
GSI-FAIRGSI-FAIR
.
.
.
The spanish theory groups have been and are very active in contributing
to the progress of Hadron physics. The groups are well integrated in
the international circuit, participating in the big european projects
(e.g. HadronPhysics) and providing support to the ongoing and future
experiments, with an especial focus to the FAIR physics program.
The experimental groups working on hadron physics projects are
very limited. However, many spanish citizens are involved in
experimental collaborations (MAINZ, GSI, CERN, …) and
could be the seed for an eventual growing of the experimental groups.
Activity integrated in
Hadron and Nuclear Physics group (UNIVERSITY OF BARCELONA)
Members: permanent: Assumpta Parreño, Artur Polls, Àngels Ramos other: Volodymyr Magas (RyC), Emmanuel Chang (postdoc), Estela Jiménez-Tejero (doc) , Axel. Pérez-Obiol (doc)
Topics: Hadron-Hadron interactions (with effective chiral lagrangians and lattice QCD simulations) Hadron spectroscopy (with light and heavy flavors) Hadron production with EM probes Hypernuclear physics Hadrons in the nuclear medium at finite temperature Relativistic Heavy Ion CollisionsCollaborations:ICE (CSIC), ICFO (Barcelona)Valencia,Granada,Murcia,Groningen,GSI,Bergen,Kiev,Torino,USA (NPLQCD nodes), La Plata
The in-medium Φ meson width has been studied via proton induced Φ production in different nuclei (C, Cu, Ag and Au) using
ANKE detector system at COSY
Hartmann et al., PRC85 (12) 035206 Hadrons in the medium
(V.K. Magas, L. Roca)
The η'N interaction is studied within a chiral unitary approach, including the coupling of
baryons to a singlet SU(3) meson. Predictions are compared with a recent measurement of the in-
medium η' width by the CBELSA/TAPS collaboration
E. Oset and A. Ramos, Phys.Lett. B704 (2011) 334-342 M. Nanova et al, Phys.Lett. B710 (2012) 600-606
η' N scattering at low energies and in-medium η' width from γA->η'A' reactions
Charm mesons in nuclear matter at finite temperature
The properties of open charm mesons, D+, Dˉ, Ds
+ and Dsˉ, in nuclear matter at finite temperature for the conditions of PANDA and CBM@FAIR are studied within a coupled
channels model
C.E. Jimenez-Tejero, A. Ramos, L. Tolos, I. Vidana, Phys.Rev. C84 (2011) 015208
Nuclear medium effects on the K* meson
The decay width of the K*ˉ vector meson in matter at saturation density is five times
bigger than in free space. It could be studied from the transparency ratio in the
γ A-> K+ K*ˉ A′ reactions
L. Tolos, R. Molina, E. Oset, A. Ramos,PRC82 (2010) 045210, NPA881 (2012) 169-177
Weak |S|=1 baryon-baryon interaction. Hypernuclear decay
Microscopic approach to the proton asymmetry in the non-mesonic weak decay of Λ-hypernuclei
The weak decay of polarized hypernuclei is studied including 1-nucleon , 2-nucleon
induced decays and Final State Interactions
E. Bauer, G. Garbarino, A. Parreno and A. Ramos Phys.Rev. C85 (2012) 024321
Resonance saturation for the N → N N transition
A. Pérez-Obiol, A. Parreno, B. Juliá-Díaz Phys .Rev. C84 (2011) 024606
Lowest-order contribution to the weak N → NN diagram
The relative importance of the different exchange mechanisms included in the meson picture is extracted by means of a comparison to the corresponding operational structures appearing in the
effective field theory approach
Effective Theories of the Strong Interactions. Applications to heavy quarkonium physics and to QCD under extreme conditions. Project: FPA2010-16963 (IFAE-UAB, IEEC-CSIC, UB)
Memberspermanent: Cristina Manuel (IEEC-CSIC), Antonio Pineda (IFAE,UAB) andJoan Soto [PI] (UB), Nora Brambilla (TUM), Antonio Vairo (TUM)other: Laura Tolos (RyC, IEEC-CSIC), Jaume Tarrus (postdoc, UB), Miguel Ángel Escobedo (postdoc, TUM), Maximilian Stahlhofen (doc, UWien), Olena Romanets (doc, KVI), Eduard Bosch (doc,UB-Univ.Frankfurt)
Topics:
Collaborations:INFN(Gran Sasso), Univ. Frankfurt, FIAS, Univ. Granada, Univ. Barcelona, IFIC/Univ. Valencia, Univ. Groningen, Univ. Regensburg,..
Heavy Quarkonium QCD at finite temperature and/or density Non-relativistic effective theories for nucleons and pions Quark-hadron duality in EFTs EFT for strongly coupled superfluids
Framework and Scientific Goals
Framework: QCD, the current theory of strong interactions
Related to experiments at CERN (LHCb, ALICE), Brookhaven (RHIC), KEK (Belle) andGSI (PANDA and CBM at FAIR), among others
Tools: Effective Field Theories (EFT)
Systems:• Heavy Quarkonium• QCD at finite temperature and/or density• Nucleons and pions• Superfluids
Heavy Quarkonium“Effective field theory for ultrasoft momenta in NRQCD and NRQED”, Pineda and Soto, Nucl. Phys. Proc.Suppl.64: 428-432, 1998“Effective field theories for heavy quarkonium”, Brambilla, Pineda, Soto and Vairo, Rev.Mod.Phys.77: 1423, 2005
• Perturbative calculations in pNRQCD• Non-perturbative calculations in pNRQCD• Production in NRQCD
QCD at finite temperature and/or density“Semiclassical transport theory for nonAbelian plasmas”, Litim and Manuel, Phys.Rept.364: 451-539, 2002“Mutual friction in a cold color flavor locked superfluid and r-mode instabilities in compact stars, Mannarelli, Manuel and Sa’d, Phys.Rev.Lett.101: 241101, 2008.“Charmed and strange baryon resonances with heavy-quark spin symmetry”, Romanets, Tolos, Garcia-Recio, Nieves, Salcedo and Timmermans, Phys.Rev.D 85: 114032, 2012
Finite Temperature: Description of the mattercreated in Heavy-Ion Collisions Renormalization Group at finite temperature Heavy Quarkonium in the quark-gluon plasma
Finite Density: Quark Matter Charm and Charmonium Strangeness Physics of compact stars
Summary of Activities
Non-relativistic effective theories for nucleons and pions“Effective Field Theory with Dibaryon Fields: Nucleon-Nucleon amplitudes at NNL”,Soto and Tarrus, Phys.Rev.C81: 014005, 2010.
Quark-hadron duality in EFTs“Deep inelastic scattering and factorization in the ’t Hooft Model”, Mondejar and Pineda, Phys.Rev.D79 :085011,2009.
Superfluids: EFT for strongly coupled superfluids “Shear viscosity due to phonons in superfluid neutron stars”, Manuel and Tolos, Phys.Rev. D 84: 123007, 2011“Shear viscosity in a superfluid cold Fermi gas at unitarity”, Mannarelli, Manuel and Tolos, arXiv:1201.4006“Bulk viscosities for cold Fermi superfluids close to the unitary limit”, Escobedo, Mannarelli and Manuel, Phys.Rev.A79: 063623, 2009.“Effective field theory and dispersion law of the phonons of a non-relativistic superfluid”, Escobedo and Manuel, Phys. Rev. A 8: 023614, 2010
Our aim is to study different issues of current interest in heavy quarkonium physics and in QCD at finite temperature and/or density, together with applying EFT techniques for strongly interacting systems such as nucleons and pions, and superfluids
Nuclear and Hadron Physics at Intermediate Energies (UNIVERSITY OF SEVILLA)
Members:
permanent: J.A. Caballero
other: R. González (doc)
Topics: Lepton nucleus scattering (scaling, meson-exchange currents…) Nucleon form factors and medium effects
Colaborations:
Madrid, Granada, Torino, Pavia, Lecce, Sofia, MIT
Electroweak Reactions at Intermediate Energies
• Beyond the Impulse Approximation: MEC, 2p-2h contributions, …• Electron scattering on few-body systems: 3-He, 4-He• Relativistic analyses of electron & neutrino scattering reactions• Scaling phenomenon in lepton scattering• Parity violation in electron scattering: strangeness in the nucleon• MiniBooNE Collaboration,…
Colaboración con UCM y UGR
Universality of the scaling function: it can be used to predict neutrino-nucleus
cross sections.
Essential to analyze neutrino oscillations: MiniBooNE, Minos, K2K.
Nuclear and Hadronic physics at intermediate energies (UNIVERSITY OF GRANADA)
Members:
permanent: E. Amaro, C. García-Recio, J. E. Romera,
E. Ruiz-Arriola, L.L. Salcedo
other: Rodrigo Navarro (doc), Ignacio Ruiz-Simo (posdoct)
Topics: Hadron-Hadron interactions (chiral symmetry, non-perturbative metods…) QCD effective action and chiral quark models Hadronic systems in a dense medium at finite temperature Dispersion of electroweak probes off nuclei (hadron production or quasielastic scattering) Hypernuclear physics Non-linear quantum dynamics in atoms, molecules and nuclei
Collaborations:
Valencia, Salamanca, UCMadrid, Barcelona, Sevilla, Cracow,Torino,Jülich, Bonn, Frankfurt,
MIT, Ohio, BNL, Idaho
D-nucleus bound states, C. García-Recio, J. Nieves, L.L. Salcedo
and L. Tólos, PRC 85, 025203 (2012)
Nuclear Physics Group GFN-UCM (Complutense University Madrid)
Members: Permanent: E. Moya de Guerra, J. Retamosa, J.M. Udías Postdocs: C. Fernández-Ramírez (JdlC), A. Relaño (Lecturer), L. Muñoz (Assistant Lecturer), O. Moreno (Assistant Lecturer)
Topics: Nuclear effects in neutrino-nucleus interactions at intermediate energies Spectral fluctuations of the hadronic mass spectra Pion production with EM probes Structure of the nucleons: strange content, form factors
Main Collaborations:Sevilla, Granada, MIT, Torino, JLab, Mainz
Electron scattering of nucleons bound on nuclei
Experimental study performed at JLAB and MAMI in order to identify possible modifications of the nucleon structure inside the nuclei. UCM contribution: development and extension of a realistic relativistic modeling of the reaction, incorporating it into the MC tool and making possible the data analysis
ratio of GE/GM form factors in bound nucleons, Data from JLAB and MAMI, FSI are constrained by induced polarization measurement
Several publications co-authored with the Hall A collaboration of JLAB, about polarization transfer in the 4He((e,e 'p)3H reaction, PRL106, (2011) 052501, PRL
105, 072001 (2010), PRL 91, 052301 (2003)
Data suggests the pressence of mild medium modifications of the form factors, like the ones implied in QMC model
• Chaos in hadrons: Application of spectral statistical techniques inherited from Quantum Chaos to the experimental meson and baryon spectra. Both meson and baryon spectrum happen to be chaotic [PRL 98, 062001 (2007); PLB 710, 139 (2012)], incompatible with most theoretical approaches which provide integrable spectra. Meson model by Vijande et al.
JPG 31, 481 (2005) is the only one with spectral-statistic properties close to the experimental spectrum.
• Photoproduction of pions in the resonance region and on nuclei: Ann. Phys. 321, 1408 (2006); PLB 664, 57 (2008); PRC 77, 065212 (2008); PLB 660, 188 (2008)• Near threshold pion photoproduction: Accurate test of chiral symmetry: Working on both the experimental (A2 and CB-TAPS collaborations at Mainz) and theoretical sides,
PLB 679, 41 (2009); PRC 80, 065201 (2009)
Effective Theories in Modern Physics (UNIVERSITY COMPLUTENSE OF MADRID:Dept. Theoretical Physics I & II)
Members:
permanent: A. Dobado, F.J. Llanes-Estrada, A. Gómez-Nicola, J.R. Peláez
other: D. Cabrera (posdoct), I. Scimeni (RyC), J. Nebreda (recent doc), G.Rios (recent doc),
J. Torres-Rincón (recent doc), J. Ruiz de Elvira (doc), R. Torres Andres (doc), M. Echevarria
(doc), O. Pavlova (doc)
Topics: Efective Field Theories (ChPT and SCET) Hadron-Hadron Interactions, hadron spectroscopy, structure and decays (light and
heavy) Structure of matter in neutron stars Hadrons in the nuclear medium at finite temperature and Relativistic Heavy-Ion
Collisions.
Collaborations:
Bahia,Bonn-Jülich,Cracovia,Graz,GSI,Indiana,ITEP-Moscú,Lisboa,Minnessotta,MIT,Murcia
Grants during 2012: Spanish-FPA (2 coordinated projects), Hadron Physicss2 (European-FP7)CPAN (High energy physics school), Exchange with GSI (theory support to ALICE)
R. Garcia-Martin , R. Kaminski, J.R.Pelaez, J. Ruiz de Elvira, PRL107, 072001(2011).
García Martín, Kaminski, J.R.Pelaez, Yndurain PRD83,074004 (2011)
Topic: Precise ππ scattering from data and dispersion relationsPrecise determination of f0(500)/σ and f0(980) resonance parameters
Significant impact in factor of 5 improvement
of sigma meson uncertainty @ PDG 2012
PDG 2012
* “Model-Independent Evolution of Transverse Momentum Dependent Distribution Functions (TMDs) at NNLL”. M. G. Echevarría, A. Idilbi, A. Schäfer, I. Scimemi [hep-ph/1208.1281]
* “Factorization Theorem for Drell-Yan At Low q_T and Transverse Momentum Distributions On-The-Light-Cone”. M. G. Echevarría, A. Idilbi, I. Scimemi JHEP 1207 (2012) 002
Topic: TMD phenomenology. Proper definition of polarized and unpolarized TMDs on-the-light-cone. kT-factorization. Model-independent and universal evolution. Soft-Collinear Effective Theory.
Unit.c2s =O(T8)
Unit.c2s =O(T6)
No Unit. c2s =O(T8)
m¼ = 0Unit.c2
s =O(T8)Unit.c2s =O(T8)
Unit.c2s =O(T6)Unit.c2s =O(T6)
No Unit. c2s =O(T8)No Unit. c2s =O(T8)
m¼ = 0m¼ = 0* A.Gómez Nicola, D.Fernández-Fraile,PRL.102:121601,2009
Topic: Strong correlation between bulk viscosity and trace anomaly established within effective theories.
Nuclear Theory and Particle Physics group (UNIVERSITY OF MURCIA)
Scattering of unstable particles in a finite volume L.Roca, E.OsetHadronic particles made of multi-(770) mesons. L.Roca, E.Oset, J.Yamagata Experimental measurement of the (1020) meson width in the nuclear medium (L.Roca in collaboration with COSY@Jülich) Pseudotensor mesons as three-body resonances. L.Roca
Collaborations:Valencia, Barcelona, Jülich, ...
One of the 2++ pseudotensor resonances dynamicaly generated with a three body interaction (PVV)
Members: Permanent: J.A.Oller, L.Roca Other: K.Glampedakis (RyC), Z.-H.Guo (post-doc CPAN), G. Ríos (post-doc Ministerio), M. Albaladejo (doc)
Topics:
Gravitational wave emission from “mountains” in neutron stars with a color superconducting quark matter core. K. Glampedakis, D.I. Jones, L. Samuelsson
The impact of an effective (entrained) neutron mass on pulsar glitch physics., N. Andersson, K. Glampedakis, W.C.G. Ho, C.M. Espinoza.
Collaborations:Southampton, Tübingen, Stockholm
Meson-meson scattering in U(3) ChPT: Large Nc, Spectral function sum rules and semilocal duality. Relation between the scalar, vector and pseudoscalar spectra Z.-H. Guo , J.A.Oller Size of the σ and its nature M.Albaladejo,J.A.OllerNucleon-nucleon interactions from Chiral Perturbation Theory and dispersion relations. The N/D Method M.Albaladejo, Z.-H.Guo, J.A.Oller, G. RíosN scattering in Covariant Chiral Perturbation Theory. N sigma term and the strangeness content of the nucleon. J.M. Alarcón, J. Martín Camalich, L.S.Geng, J.A. Oller, L. Alvarez-RusoFinite volume effects in scattering a phaseshit extraction from LQCD J.M.Albaladejo, G. Ríos, E. Oset, J.A.Oller, G. Ríos Chiral Perturbation Theory in the Nuclear Medium. Upper limit on neutron star masses. A.Dobado, F.J.Llanes, J.A.OllerPseudoscalar resonances as dynamically generated from the interactions between the lightest scalar resonances and pseudoscalar mesons. M.Albaladejo, J.A.Oller,L.RocaNew vector resonances from the interactions between the lightest scalar and vector resonances L.Alvarez-Ruso, J.M.Alarcón, J.A.Oller KbarN Interactions in coupled channels revisited. Z.-H.Guo,, J.A.Oller
Collaborations:Sussex, Mainz, IFIC, Beijing, Madrid
Nuclear Physics group (UNIVERSITY OF SALAMANCA)
Members:
permanent: F. Fernández, E. Hernández, D. Rodríguez-Entem, A. Valcarce, T. Fernández-
Caramés
other: C. Albertus (JdC), Pablo García (recent doc), Jorge Segovia (recent doc)
Topics: Baryon-Baryon interactions (from quark model and effective theories) Hadron spectroscopy Electroweak processes with hadrons production in neutrino-nucleon and neutrino-nucleus reactions
Collaborations:
Granada, Valencia, Madrid, Grenoble, Jerusalem, Mexico, Seattle
HADRON SPECTROSCOPY: Quark Models versus Dynamical models
Dynamical Models: Mesons = Baryons =
generated from unitary (non-perturbative) extensions of chiral perturbation
theory in coupled channels
Barcelona, Granada, Murcia, Valencia
As a result, it is found that some of the observed resonances are generated dynamically through the multiple scattering of meson-meson (or baryon-meson) pairs in coupled channels. Their properties might be very different from the Quark Model predictions.
Quark Models: Mesons = Baryons =
Valencia, Salamanca
qq qqq
TheThe constituentconstituent quark model quark model
Many of the observed resonances fall within the quark model predictionsA. Valcarce, H. Garcilazo, F. Fernández and P. González, Rept. Prog. Phys. 68, 965 (2005)
The quark model also predicts other baryon properties. Form factors, decay widths of simple and doubly heavy hadrons, C. Albertus, E. Hernández, J. Nieves, Phys. Rev. D85 (2012) 084035; Phys. Lett. B704 (2011) 499, etc…
But… some anomalies:
Quark Models:
Tij = Vij + Vil Gl Tlj
KKN
1255 1331 1435 1663 1741 1814 (MeV)
s-wave
= +
Dynamical Models: an example The (1405)
chiral lagrangian
+
unitarizationunitarization
in coupled chanels
generates the (1405) located 27 MeV
below the K-p threshold
E. Oset and A. Ramos, Nucl. Phys. A635 (1998) 99
Several groups are extending their models to the charmcharm degree of
freedom to interpret the data from BELLE, BABAR, BES, CLEO …
but also in preparation for the forthcoming experiments at FAIR that will
be sensitive to the in-medium properties of hadrons with charm.
Valencia dynamically generated open charm and hidden charm
Barcelona meson resonances from meson-meson coupled channel dynamics
UB, UAB dynamically generated charmed baryon resonances within
Gröningen a SU(4) model D-meson properties in hot and dense medium
Granada dynamically generated charmed baryon resonances within
UAB a SU(8) model (accounts for heavy-quark spin symmetry)
Valencia
Salamanca quark model charmed baryon and meson resonances
X(3872)
JP=0+
JP=1-
D N molecule (Jπ=3/2-)
Mass
ΛC(2940)+
No charged partner
Hadron and Nuclear theory group (IFIC: CSIC-UNIVERSITY OF VALENCIA)
Members:
permanent: E. Oset, M. J. Vicente-Vacas, J. Nieves
other: L. Alvarez-Ruso (RyC), A. Ozpineci (sab), M. Pavón (pdoc), T. Ledwig (pdoc),
M.Bayar (pdoc), J. Garzón (doc), F. Aceti (doc), En Wang (doc), C. Hidalgo (doc),
C.W. Xiao (doc)
Topics: Dynamically generated three-hadron resonances (mostly involving charm dynamics) Finite volume treatment of scattering of hadrons and limits to phase shifts extraction
from lattice QCD Hadron properties (spectroscopy, magnetic moments, form factors) Hadrons in nuclei Pion production and neutrino-nucleon and neutrino-nucleus reactions Chiral perturbation theory with states Heavy quark spin symmetry
Collaborations:
Granada, Murcia, Salamanca, Barcelona, Madrid, Osaka, Beijing, Jülich, Nara, Kyoto…
D. Gamermann, J. Nieves, E. Oset and E. Ruiz-Arriola, Phys. Rev. D81 (2010) 014029; J. Nieves and M. Pavón-Valderrama, Phys. Rev. D86 (2012) 056004
• Prediction of Heavy quark spin symmetry partners of the X(3872)
• m
X(3720) and X(3872) resonances +… (Hidden charm)
Dynamical models: Heavy Quark Spin Symmetry / SU(4) Hidden Gauge
,* ccDD
Isospin violation in the X(3872) (JPC=1++) decays to J/and J/
(BELLE)
• X(3872) is not purely an I=0 state or
• Transition operator violates isospin or both!
moleculesDD **,DD
Isospin violations in X(3872) decays…
Because of the mass differences D0 D- and D*0 D*- the kinetic energy (including the mass terms) does not conmute with isospin, the X(3872) is an admixture of isospin I=0 and I=1 (r is the DD*
relative distance in the molecule X)
1|2
)()(0|
2
)()(
)3872(I
rch
rneuIr
chrneu
X
neu: D0 D*0 + cc and ch: D+ D*- + cc (neutral and charged thresholds differ in 8 MeV)
Assuming a contact interaction ….
2
)0()0(
)0()0(
)/()/(
chneu
chneuJXBJXB
D. Gammermann, E. Oset Phys. Rev. D80 (2009) 014003; D. Gammermann, J. Nieves, E. Oset and E. Ruiz-Arriola, Rev. D81 (2010) 014029.
this ratio can be understood !
I. Ruiz-Simò (UGR), M.J. Vicente-Vacas, F. Sánchez (IFAE) & J. Nieves (IFIC)
microscopial evaluation of 2p2h contributions
MINIBOONE CCQE XSECT
Electroweak Nuclear Reactions at Intermediate Energies
New developments in Baryon PT:
use EOMS renormalization scheme: covariant and preserves analytical properties Baryon masses and magnetic moments (clear improvement SU(3) Coleman-Glashow description) J.M. Camalich, L.S. Geng and M.J. Vicente-Vacas, PRL 101 (2008) 222002; PLB676 (2009) 63; PRD82 (2010) 074504
Hyperon semileptonic decays (SU(3) breaking corrections, determine Vus and competitive with other methods: kaon and tau decays) L.S. Geng, J.M. Camalich and M.J. Vicente-Vacas, PRD 79 (2009) 094022
Jorge Martín-Camalich(supervised by Manuel Vicente Vacas)
Winner of EPS Nuclear Physics Division
Ph.D. Prize
2009-11
Hadron Physics and Quark Model group (IFIC:UNIVERSITY OF VALENCIA)
Members:
permanent: P. González, S. Noguera, V. Vento, J. Vijande
Topics: Non-local chiral Lagrangians Hadron spectroscopy Deep inelastic scattering (GPD, TDA) Deconfinenemnt Glueballs
Collaborations:
Salamanca, Peruggia, Tandar (Buenos Aires), La Plata, Dubna
Non Perturbative OGE Potential from SDE (P. González, V. Vento, V. Mathieu) Phys. Rev. D84,
114008 (2011)
A QFT is completely characterized by its Green functions which are governed by SDE.
Solution
One Gluon Exchange (OGE) Potential:
The coupling depends on the gluon mass
The resulting potential looks like a screened Cornell potential improving the fit to heavy quarkonia masses beyond 1 GeV excitation energy.
Pion transition form factor (S. Noguera, Vicente Vento) The EMC effect: local nuclear dynamics
or quark-gluon dynamics? Vicente Vento
J. Vijande
Too many X’s, Y’s and Z’s?T
.F.C
., A.V
., J.V., P
hys. Lett. B
709, 358 (2012)
c n
c n
J/
c
nc
n
D D
Hid
den
flav
orE
xpli
cit f
lavo
rThere should not be a
partner of the X(3872) in the bottom
sector
There should be a JP=1+ bound state in the exotic bottom
sector
LHCpheno group (Instituto de Física Corpuscular, IFIC, Valencia)
Members of the intermediate energy region subgroup: Permanent: A. Pich, J. Portolés Other: P. Ruiz Femenía (post-doc CPAN), O. Shekhovtsova (Marie Curie postdoc), I. Rosell (external member), Jie Lu (postdoc), A. Filipuzzi (doc) , A. Celis (doc), A. Lami (doc.), V. Ilisie (doc.), C. Koren (doc), M. Zahiri-Abyaneh (doc)
Topics: New Physics in decays of the B and D mesons Kaon physics Lepton Flavour Violation processes Hadronic decays of the tau lepton Hadronic form factors of QCD currents at NLO in the 1/Nc expansion Determination of low-energy constants in Chiral Perturbation Theory Violation of universality by the third lepton family Resonance Chiral Theory Application of low-energy hadron physics techniques to a possible new strong sector in the 1 TeV energy region
Collaborations:U. Mainz, Los Alamos National Laboratory, U. Dortmund, Technische Univesität Munich, INFN Bari, U. Krakov, U. Winsconsin at Madison, U. Cardenal Herrera (CEU).
State of the art
Low-energy dominated processes
Chiral Perturbation Theory frameworkUp to O(p4)
Dominating O(p6) contributions
High-energy dominated processes
Outlook on Kaon DecaysV. Cirigliano, G. Ecker, H. Neufeld, A. Pich,
J.Portolés Kaon Decays in the Standard Model,
Reviews of Modern Physics, 84 (2012) 399
………
[D. Gómez Dumm et al, Phys. Lett. B685 (2010) 158]
[D. Gómez Dumm et al, Phys. Lett. B685 (2010) 158]
Lattice QCD (UAM-IFIC)
Members:
permanent: P. Hernández (IFIC-UV), C. Pena (UAM & IFT-UAM/CSIC)
other: G.Herdoíza (posdoct, Madrid) , L. Keegan (posdoct, Madrid), E. Kerrane
(posdoct, Madrid), G.Vulvert (posdoct, Valencia), E. Endress (doc, Madrid),
Topics:
Light hadron physics: determination of effective pion and kaon couplings Flavour phenomenology: study of kaon non-hadronic decay Quantum field theory: mixed-action lattice regularisations of QCD, mixed –
regime Chiral Perturbation Theory Computational physics: ab initio computations in QCD with physical light quark masses
Collaborations:
Mainz, DESY-Zeuthen, INFN Rome ‘Tor Vergata’
EXPERIMENTAL HADRON PHYSICS in Spain
José Díaz
(University of Valencia-IFIC)
Juan Garzón
(University of Santiago)
FAIR
C. Pajares,
N. Armesto,
E. G. Ferreiro
C. M. Merino
(University of Santiago)
FAIR
?
No supported by Plan Nacional I+D+i
HADES programme (so far) HADES programme (so far)
• pp reactions
(1.25, 2.2, 3.5 GeV)
dp reactions
(1.25 GeV)
• nucleus + nucleusC+C, Ar+KCl
Au+Au (2012)
• p + nucleus (Nb @ 3.5 GeV)
• e+e- production in N+N – reference reactions for A+A
• single and double production (barion resonances in N+N)
• , , production- hadr.channels and rear e+e- decays
(new UL in PDG)
•(1405) , (1385) (new PDG entry)
• K0 production
• low mas e+e- „excess” : (DLS puzzle, emissivity,..)• kaon production : K0
s
• Hyperon production; , , (1321)• production• -p, p-p, , correlations
• /mesons in cold nuclear matter• strangeness production K,
Low mass e+e- excess : „DLS puzzle”Low mass e+e- excess : „DLS puzzle”
DLS data: R.J. Porter et al.: PRL. 79 (1997) 1229
Calculation: E.L.Bratkovskaya et al. PLB445 (1999) 265
before HADES (< 2008) HADES data projected in DLS acceptance
HADES data: Agakishiev et al., PLB 663 (2008) 43
HADES fully confirms DLS (DiLepton Spectometer puzzle) results
• What about „excess” ? Is it true in-medium effect ? or not understood elementary process?
The ALICE Collaboration is building a dedicated heavy-ion detector to study the physics of strongly interacting matter at extreme energy densities, where the formation of a new phase of matter, the quark-gluon plasma, is expected. The existence of such a phase and its properties are key issues in QCD for the understanding of confinement and of chiral-symmetry restoration.
J/suppression
General agreement that the J/suppression in hot and dense
matter as produced by ultrarelativistic AA collisions is a golden
signature for the formation of the QGP...
A. Andronic et al. PLB 652 (2007) 259
“Charmonium production at LHC”,
M. Malek, INP, July 09
Phenomenology group (Santiago de Compostela)
Members: ➜ Permanent: C. Pajares, N. Armesto, E. G. Ferreiro, C. M. Merino. ➜ Others: C. A. Salgado (Ramón y Cajal, ERC-StG). ➜ Postdocs: G. Beuf, M. Deak, Y. Guo, C. Marquet, M. Martínez. ➜ 5 PhD. students.
Topics: ➜ Quark-Gluon Plasma: quarkonium suppression, energy loss and jet
quenching, collective phenomena and correlations. ➜ Small-x physics and nuclear parton densities. ➜ Simulators for HE nuclear collisions: PSM, Q-PYTHIA, Q-HERWIG. ➜ ALICE: theoretical input, IRCs, upgrade proposals. ➜ LHeC: CDR to the TDR.
Collaborations: UB, CERN, Jussieu, Lisboa, IPN Orsay, Purdue, Saclay,...
Exotic Hadrons
(Glueballs and Hybrids)
Charm in Nuclei
Charmonium
D- and DS-physics
Hypernuclei
The CBM (Compressed Baryonic Matter) detector is a more sophisticated version of the HADES detector and will measure heavy-ion collisions up to 35 AGeV, achieving densities of 8-10 times nuclear matter density. It will also allow to explore: chiral restoration, the critical point of the QCD-phase diagram and properties of mesons containing charm: D, J/
antiproton-proton and antiproton-nucleus collisions
Perhaps….
A.Gadea (IFIC, Valencia)B. Quintana (U. Salamanca)A. Jungclaus (IEM, Madrid)
The spanish theory groups have been and are very active in contributing
to the progress of Hadron physics. The groups are well integrated in
the international circuit, participating in the big european projects
(e.g. HadronPhysics) and providing support to the ongoing and future
experiments, with an especial focus to the FAIR physics program.
The experimental groups working on hadron physics projects are
very limited. However, many spanish citizens are involved in
experimental collaborations (MAINZ, GSI, CERN, …) and
could be the seed for an eventual growing of the experimental groups.
Thank you for your attention!