Recoil order chiral corrections to baryon octet axial vector currents and large<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>N</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>QCD

Zhu, Shi-Lin; Sacco, Gian Franco; Ramsey-Musolf, Michael J.

doi:10.1103/physrevd.66.034021

Cited by 28 publications

(20 citation statements)

References 29 publications

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“…1.24. Computations of SU(3) breaking effects in axial current matrix elements [135,136], and, more recently, also first lattice results for the first moment of ∆s + ∆s [137] point towards a sizable breaking of SU(3) symmetry. To study its validity of one needs to probe ∆s(x) at smaller values of x at an EIC.…”

Section: Current Status Of Global Ppdf Fits -Baseline For Eic Projectmentioning

confidence: 99%

Gluons and the quark sea at high energies: distributions, polarization, tomography

Boer¹,

Diehl²,

Milner³

et al. 2011

198

291

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ForewordThe study of the fundamental structure of nuclear matter is a central thrust of physics research in the United States. As indicated in Frontiers of Nuclear Science, the 2007 Nuclear Science Advisory Committee long range plan, consideration of a future Electron-Ion Collider (EIC) is a priority and will likely be a significant focus of discussion at the next long range plan. We are therefore pleased to have supported the ten week program in fall 2010 at the Institute of Nuclear Theory which examined at length the science case for the EIC. This program was a major effort; it attracted the maximum allowable attendance over ten weeks.This report summarizes the current understanding of the physics and articulates important open questions that can be addressed by an EIC. It converges towards a set of "golden" experiments that illustrate both the science reach and the technical demands on such a facility, and thereby establishes a firm ground from which to launch the next phase in preparation for the upcoming long range plan discussions. We thank all the participants in this productive program. In particular, we would like to acknowledge the leadership and dedication of the five co-organizers of the program who are also the co-editors of this report.David Kaplan, Director, National Institute for Nuclear Theory Hugh Montgomery, Director, Thomas Jefferson National Accelerator Facility Steven Vigdor, Associate Lab Director, Brookhaven National Laboratory iii Preface This volume is based on a ten-week program on "Gluons and the quark sea at high energies", which took place at the Institute for Nuclear Theory (INT) in Seattle from September 13 to November 19, 2010. The principal aim of the program was to develop and sharpen the science case for an Electron-Ion Collider (EIC), a facility that will be able to collide electrons and positrons with polarized protons and with light to heavy nuclei at high energies, offering unprecedented possibilities for in-depth studies of quantum chromodynamics. Guiding questions were• What are the crucial science issues?• How do they fit within the overall goals for nuclear physics?• Why can't they be addressed adequately at existing facilities?• Will they still be interesting in the 2020's, when a suitable facility might be realized?The program started with a five-day workshop on "Perturbative and Non-Perturbative Aspects of QCD at Collider Energies", which was followed by eight weeks of regular program and a concluding four-day workshop on "The Science Case for an EIC".More than 120 theorists and experimentalists took part in the program over ten weeks. It was only possible to smoothly accommodate such a large number of participants because of the extraordinary efforts of the INT staff, to whom we extend our warm thanks and appreciation. We thank the INT Director, David Kaplan, for his strong support of the program and for covering a significant portion of the costs for printing this volume. We gratefully acknowledge additional financial support provided by BNL and JLab.The program w...

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Section: Current Status Of Global Ppdf Fits -Baseline For Eic Projectmentioning

confidence: 99%

Gluons and the quark sea at high energies: distributions, polarization, tomography

Boer¹,

Diehl²,

Milner³

et al. 2011

198

291

View full text Add to dashboard Cite

show abstract

“…One obtains H = 3.0 ± 5.0 in the cutoff scheme, whereas in the case of dim reg a fit yields H = −3.5, and thus no reliable estimate for the parameter H can be given in chiral perturbation theory. An independent estimate for H has recently been obtained in large N c QCD [26] where the authors obtain values in the range H = −2.25 . .…”

Section: −7mentioning

confidence: 99%

Long distance regularization in chiral perturbation theory with decuplet fields

et al. 2002

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We investigate the use of long distance regularization in SU (3) baryon chiral perturbation theory with decuplet fields. The one-loop decuplet contributions to the octet baryon masses, axial couplings, S-wave nonleptonic hyperon decays and magnetic moments are evaluated in a chirally consistent fashion by employing a cutoff to implement long distance regularization. The convergence of the chiral expansions of these quantities is improved compared to the dimensionally regularized version which indicates that the propagation of Goldstone bosons over distances smaller than a typical hadronic size, which is beyond the regime of chiral perturbation theory but included by dimensional regularization, is removed by use of a cutoff.

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“…Several methods have been suggested to reconcile power counting with the constraints of analyticity in the relativistic approach [21,22,23,24,25,26,27]. The most widely used technique is the so-called infrared regularization of Becher and Leutwyler [23] which has been applied in various calculations of baryon properties [28,29,30,31,32], pion-nucleon scattering [33,34], mesonic U(3) chiral perturbation theory [35,36,37], a discussion of the generalized Gerasimov-Drell-Hearn sum rule and the spin structure of the nucleon [38,39], and the ground-state energy of pionic hydrogen [40].…”

Section: Introductionmentioning

confidence: 99%

Renormalization of relativistic baryon chiral perturbation theory and power counting

et al. 2003

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We discuss a renormalization scheme for relativistic baryon chiral perturbation theory which provides a simple and consistent power counting for renormalized diagrams. The method involves finite subtractions of dimensionally regularized diagrams beyond the standard MS scheme of chiral perturbation theory to remove contributions violating the power counting. This is achieved by a suitable renormalization of the parameters of the most general effective Lagrangian. In addition to its simplicity our method has the benefit that it can be easily applied to multiloop diagrams. As an application we discuss the mass of the nucleon and compare the result with the expression of the infrared regularization of Becher and Leutwyler.

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Recoil order chiral corrections to baryon octet axial vector currents and largeNcQCD

Cited by 28 publications

References 29 publications

Gluons and the quark sea at high energies: distributions, polarization, tomography

Gluons and the quark sea at high energies: distributions, polarization, tomography

Long distance regularization in chiral perturbation theory with decuplet fields

Renormalization of relativistic baryon chiral perturbation theory and power counting

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