1.
|
Constraining the Higgs boson mass: A non-perturbative lattice study
/ Jansen, Karl (NIC, Zeuthen ; DESY, Zeuthen) ; Bulava, John (CERN) ; Nagy, Attila (NIC, Zeuthen ; DESY, Zeuthen)
We present non-perturbatively obtained results for upper and lower Higgs boson mass bounds using a chiral invariant lattice formulation of the Higgs-Yukawa sector of the standard model. We determine the mass bounds both, for a standard model top quark mass and for a possible fourth quark generation with masses up to 700GeV..
2012 - 8 p.
- Published in : PoS: ConfinementX (2012) , pp. 276
External link: Published version from PoS
In : 10th Conference on Quark Confinement and the Hadron Spectrum, Munich, Germany, 8 - 12 Oct 2012, pp.276
|
|
2.
|
Higgs-Yukawa model in chirally-invariant lattice field theory
/ Bulava, John (CERN) ; Gerhold, Philipp (Humboldt U., Berlin ; NIC, Zeuthen) ; Jansen, Karl (NIC, Zeuthen) ; Kallarackal, Jim (Humboldt U., Berlin ; NIC, Zeuthen) ; Knippschild, Bastian (Taiwan, Natl. Taiwan U.) ; Lin, C.-J.David (Taiwan, Natl. Chiao Tung U. ; NCTS, Hsinchu) ; Nagai, Kei-Ichi (KMI, Nagoya) ; Nagy, Attila (Humboldt U., Berlin ; NIC, Zeuthen) ; Ogawa, Kenji (Taiwan, Chung Yuan Christian U.)
Non-perturbative numerical lattice studies of the Higgs-Yukawa sector of the standard model with exact chiral symmetry are reviewed. In particular, we discuss bounds on the Higgs boson mass at the standard model top quark mass, and in the presence of heavy fermions. [...]
arXiv:1210.1798; CERN-PH-TH-2012-255; DESY 12-162.-
2013 - 23 p.
- Published in : Adv. High Energy Phys. 2013 (2013) 875612
Fulltext: arXiv:1210.1798 - PDF; 875612 - A.PDF; Hindawi Open Access article: PDF; External link: Preprint
|
|
3.
|
Higgs boson mass bounds in the presence of a heavy fourth quark family
/ Bulava, John (CERN) ; Gerhold, Philipp (Humboldt U., Berlin) ; Nagy, Attila (Humboldt U., Berlin) ; Kallarackal, Jim (Humboldt U., Berlin) ; Jansen, Karl (NIC, Zeuthen)
We present Higgs boson mass bounds in a lattice regularization allowing thus for non-perturbative investigations. In particular, we employ a lattice modified chiral invariant Higgs-Yukawa model using the overlap operator. [...]
arXiv:1301.3701; CERN-PH-TH-2012-299.-
2012
- Published in : PoS LATTICE2012 (2012) 054
Fulltext: PDF; Preprint: PDF; External link: Preprint
In : 30th International Symposium on Lattice Field Theory, Cairns, Australia, 24 - 29 Jun 2012, pp.054
|
|
4.
|
Constraining a fourth generation of quarks: non-perturbative Higgs boson mass bounds
/ Bulava, J. (CERN) ; Jansen, K. (NIC, Zeuthen) ; Nagy, A. (NIC, Zeuthen ; Humboldt U., Berlin)
We present a non-perturbative determination of the upper and lower Higgs boson mass bounds with a heavy fourth generation of quarks from numerical lattice computations in a chirally symmetric Higgs-Yukawa model. We find that the upper bound only moderately rises with the quark mass while the lower bound increases significantly, providing additional constraints on the existence of a straight-forward fourth quark generation. [...]
arXiv:1301.3416; DESY-13-006; CERN-PH-TH-2013-007; HU-EP-13-1; DESY-13-006; CERN-PH-TH-2013-007; HU-EP-13-1.-
2013-06-10 - 6 p.
- Published in : Phys. Lett. B 723 (2013) 95-99
Fulltext: PDF; External link: Preprint
|
|
5.
|
$M_b$ and $f_B$ from non-perturbatively renormalized HQET with $N_f$=2 light quarks
/ Blossier, Benoit (Orsay, LPT) ; Bulava, John (CERN) ; Della Morte, Michele (Mainz U., Inst. Kernphys.) ; Donnellan, Michael (NIC, Zeuthen ; DESY, Zeuthen) ; Fritzsch, Patrick (Humboldt U., Berlin) ; Garron, Nicolas (Edinburgh U.) ; Heitger, Jochen (Munster U., ITP) ; von Hippel, Georg (Mainz U., Inst. Kernphys.) ; Simma, Hubert (NIC, Zeuthen ; DESY, Zeuthen) ; Sommer, Rainer (NIC, Zeuthen ; DESY, Zeuthen)
We present an updated analysis of the non-perturbatively renormalized b-quark mass and B meson decay constant based on CLS lattices with two dynamical non-perturbatively improved Wilson quarks. This update incorporates additional light quark masses and lattice spacings in large physical volume to improve chiral extrapolations and to reach the continuum limit. [...]
arXiv:1112.6175; CERN-PH-TH-2011-318; DESY-11-251; EDINBURGH 2011-40; HU-EP-11-63; LPT ORSAY-11-127; MKPH-T-11-26; MS-TP-11-25; SFB-CPP-11-81.-
2011 - 7 p.
- Published in : PoS: LATTICE2011 (2011) , pp. 280
Fulltext: PDF; Preprint: PDF; External link: Preprint
In : 29th International Symposium on Lattice Field Theory, Squaw Valley, Lake Tahoe, CA, USA, 10 - 16 Jul 2011, pp.280
|
|
6.
|
Investigation of the phase structure of a chirally-invariant Higgs-Yukawa model
/ Bulava, John (CERN) ; Gerhold, Philipp (Humboldt U., Berlin ; NIC, Zeuthen) ; Hou, George W.-S. ; Jansen, Karl (NIC, Zeuthen) ; Knippschild, Bastian (Taiwan, Natl. Taiwan U.) ; Lin, C.-J.David (Taiwan, Natl. Chiao Tung U. ; NCTS, Hsinchu) ; Nagai, Kei-Ichi (KMI, Nagoya) ; Nagy, Attila (Humboldt U., Berlin ; NIC, Zeuthen) ; Ogawa, Kenji (Taiwan, Chung Yuan Christian U.)
We present new data on our ongoing project on the investigation of the phase structure of the Higgs-Yukawa model at large bare Yukawa couplings. The data presented last year are extended in terms of statistics, the number of bare Yukawa couplings at existing, and new larger volumes. [...]
arXiv:1210.8249.-
2012 - 7 p.
- Published in : PoS LATTICE2012 (2012) 253
Fulltext: PDF; External link: Proceedings of Science Server
In : 30th International Symposium on Lattice Field Theory, Cairns, Australia, 24 - 29 Jun 2012, pp.253
|
|
7.
|
Study of the Higgs-Yukawa theory in the strong-Yukawa coupling regime
/ Bulava, John (CERN) ; Gerhold, Philipp (Humboldt U., Berlin ; NIC, Zeuthen ; DESY, Zeuthen) ; Hou, George W.S. (Taiwan, Natl. Taiwan U.) ; Jansen, Karl (NIC, Zeuthen ; DESY, Zeuthen) ; Knippschild, Bastian (Taiwan, Natl. Taiwan U. ; Mainz U., Inst. Kernphys.) ; Lin, C.J.David (Taiwan, Natl. Chiao Tung U. ; NCTS, Hsinchu) ; Nagai, Kei-Ichi (KMI, Nagoya) ; Nagy, Attila (DESY, Zeuthen ; Humboldt U., Berlin ; NIC, Zeuthen) ; Ogawa, Kenji (Taiwan, Natl. Chiao Tung U.) ; Smigielski, Brian (Taiwan, Natl. Taiwan U.)
In this article, we present an ongoing lattice study of the Higgs-Yukawa model, in the regime of strong-Yukawa coupling, using overlap fermions. We investigated the phase structure in this regime by computing the Higgs vacuum expectation value, and by exploring the finite-size scaling behaviour of the susceptibility corresponding to the magnetisation. [...]
arXiv:1111.4544; DESY-11-219; DESY 11-219.-
2011 - 7 p.
- Published in : PoS: LATTICE2011 (2011) , pp. 075
Fulltext: PDF; Preprint: PDF; External link: POS
In : 29th International Symposium on Lattice Field Theory, Squaw Valley, Lake Tahoe, CA, USA, 10 - 16 Jul 2011
|
|
8.
|
B-physics from HQET in two-flavour lattice QCD
/ Bernardoni, F. (NIC, Zeuthen ; DESY, Zeuthen) ; Blossier, B. (Orsay, LPT) ; Bulava, J. (CERN) ; Della Morte, M. (Mainz U., Inst. Kernphys.) ; Fritzsch, P. (Humboldt U., Berlin) ; Garron, N. (Trinity Coll., Dublin) ; Gerardin, A. (Orsay, LPT) ; Heitger, J. (Munster U., ITP) ; von Hippel, G. (Mainz U., Inst. Kernphys.) ; Simma, H. (NIC, Zeuthen ; DESY, Zeuthen) et al.
We present our analysis of B physics quantities using non-perturbatively matched Heavy Quark Effective Theory (HQET) in Nf= 2 lattice QCD on the CLS ensembles. Using all-to-all propagators, HYP-smeared static quarks, and the Generalized Eigenvalue Problem (GEVP) approach with a conservative plateau selection procedure, we are able to systematically control all sources of error. [...]
arXiv:1210.7932; DESY-12-188; CERN-PH-TH-2012-289; HU-EP-12-35; LPT-ORSAY-12-107; MS-TP-12-14; SFB-CPP-12-78; TCDMATH-12-09; CERN-PH-TH-2012-289.-
2012 - 7 p.
- Published in : PoS LATTICE2012 (2012) 273
Fulltext: Lattice 2012_273 - PDF; arXiv:1210.7932 - PDF; External link: Proceedings of Science Server
In : 30th International Symposium on Lattice Field Theory, Cairns, Australia, 24 - 29 Jun 2012, pp.273
|
|
9.
|
B-physics with $N_f=2$ Wilson fermions
/ Bernardoni, F. (NIC, Zeuthen ; DESY, Zeuthen) ; Blossier, B. (Orsay, LPT) ; Bulava, J. (CERN) ; Della Morte, M. (Valencia U., IFIC ; Valencia U.) ; Fritzsch, P. (Humboldt U., Berlin) ; Garron, N. (Trinity Coll., Dublin) ; Gerardin, A. (Orsay, LPT) ; Heitger, J. (Munster U., ITP) ; von Hippel, G. (Mainz U., Inst. Kernphys.) ; Simma, H. (NIC, Zeuthen ; DESY, Zeuthen) et al.
We report the final results of the ALPHA collaboration for some B-physics observables: $f_B$, $f_{B_s}$ and $m_b$. We employ CLS configurations with 2 flavors of $O(a)$ improved Wilson fermions in the sea and pion masses ranging down to 190 MeV. [...]
arXiv:1309.1074; DESY-13-154; TCD-MATH-13-10; HU-EP-13-41; MS-TP-13-22; IFIC-13-58; SFB-CPP-13-61.-
2014 - 7 p.
- Published in : PoS LATTICE2013 (2014) 381
Fulltext: PDF; External link: Proceedings of Science Server
In : 31st International Symposium on Lattice Field Theory, Mainz, Germany, 29 Jul - 03 Aug 2013, pp.381
|
|
10.
|
B-physics from non-perturbatively renormalized HQET in two-flavour lattice QCD
/ Bernardoni, Fabio (NIC, Zeuthen ; DESY, Zeuthen) ; Blossier, Benoit (Orsay, LPT) ; Bulava, John (CERN) ; Della Morte, Michele (Mainz U., Inst. Kernphys.) ; Fritzsch, Patrick (Humboldt U., Berlin) ; Garron, Nicolas (Trinity Coll., Dublin) ; Gerardin, Antoine (Orsay, LPT) ; Heitger, Jochen (Munster U., ITP) ; von Hippel, Georg M. (Mainz U., Inst. Kernphys.) ; Simma, Hubert (NIC, Zeuthen ; DESY, Zeuthen)
We report on the ALPHA Collaboration's lattice B-physics programme based on N_f=2 O(a) improved Wilson fermions and HQET, including all NLO effects in the inverse heavy quark mass, as well as non-perturbative renormalization and matching, to fix the parameters of the effective theory. Our simulations in large physical volume cover 3 lattice spacings a ~ (0.08-0.05) fm and pion masses down to 190 MeV to control continuum and chiral extrapolations. [...]
arXiv:1210.6524; MS-TP-12-13; LPT-ORSAY-12-101; CERN-PH-TH-2012-256; HU-EP-12-31; DESY-12-167; SFB-CPP-12-74; TCDMATH-12-08; MS-TP-12-13; LPT-ORSAY-12-101; CERN-PH-TH-2012-256; HU-EP-12-31; TCDMATH 12-08; DESY 12-167; SFB-CPP-12-74.-
2013 - 7 p.
- Published in : Nucl. Phys. B, Proc. Suppl. 234 (2013) 181-186
Fulltext: PDF; External link: Preprint
In : 16th High Energy Physics International Conference in Quantum ChromoDynamics, Montpellier, France, 2 - 6 Jul 2012
|
|