GenEvA (I): a new framework for event generation

被引：21
作者：
Bauer, Christian W. [1 ]
Tackmann, Frank J. [1 ]
Thaler, Jesse [1 ]
机构：
[1] Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2008年 / 12期
关键词：
Jets; Phenomenological Models; NLO Computations; QCD;
D O I：
10.1088/1126-6708/2008/12/010
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We show how many contemporary issues in event generation can be recast in terms of partonic calculations with a matching scale. This framework is called GenEvA, and a key ingredient is a new notion of phase space which avoids the problem of phase space double-counting by construction and includes a built-in definition of a matching scale. This matching scale can be used to smoothly merge any partonic calculation with a parton shower. The best partonic calculation for a given region of phase space can be determined through physics considerations alone, independent of the algorithmic details of the merging. As an explicit example, we construct a positive-weight partonic calculation for e(vertical bar) e(-) -> n jets at next-to-leading order (NLO) with leading-logarithmic (LL) resummation. We improve on the NLO/LL result by adding additional higher-multiplicity tree-level (LO) calculations to obtain a merged NLO/LO/LL result. These results are implemented using a new phase space generator introduced in a companion paper [1].
引用
收藏
页数：64
相关论文
共 89 条
  • [1] First run II measurement of the W boson mass at the Fermilab Tevatron
    Aaltonen, T.
    Abulencia, A.
    Adelman, J.
    Akimoto, T.
    Albrow, M. G.
    Gonzalez, B. Alvarez
    Amerio, S.
    Amidei, D.
    Anastassov, A.
    Annovi, A.
    Antos, J.
    Apollinari, G.
    Apresyan, A.
    Arisawa, T.
    Artikov, A.
    Ashmanskas, W.
    Attal, A.
    Aurisano, A.
    Azfar, F.
    Azzi-Bacchetta, P.
    Azzurri, P.
    Bacchetta, N.
    Badgett, W.
    Barbaro-Galtieri, A.
    Barnes, V. E.
    Barnett, B. A.
    Baroiant, S.
    Bartsch, V.
    Bauer, G.
    Beauchemin, P. -H.
    Bedeschi, F.
    Bednar, P.
    Behari, S.
    Bellettini, G.
    Bellinger, J.
    Belloni, A.
    Benjamin, D.
    Beretvas, A.
    Beringer, J.
    Berry, T.
    Bhatti, A.
    Binkley, M.
    Bisello, D.
    Bizjak, I.
    Blair, R. E.
    Blocker, C.
    Blumenfeld, B.
    Bocci, A.
    Bodek, A.
    Boisvert, V.
    [J]. PHYSICAL REVIEW D, 2008, 77 (11):
  • [2] First measurement of the W-boson mass in run II of the Tevatron
    Aaltonen, T.
    Abulencia, A.
    Adelman, J.
    Affolder, T.
    Akimoto, T.
    Albrow, M. G.
    Amerio, S.
    Amidei, D.
    Anastassov, A.
    Anikeev, K.
    Annovi, A.
    Antos, J.
    Aoki, M.
    Apollinari, G.
    Arisawa, T.
    Artikov, A.
    Ashmanskas, W.
    Attal, A.
    Aurisano, A.
    Azfar, F.
    Azzi-Bacchetta, P.
    Azzurri, P.
    Bacchetta, N.
    Badgett, W.
    Barbaro-Galtieri, A.
    Barnes, V. E.
    Barnett, B. A.
    Baroiant, S.
    Bartsch, V.
    Bauer, G.
    Beauchemin, P. -H.
    Bedeschi, F.
    Behari, S.
    Bellettini, G.
    Bellinger, J.
    Belloni, A.
    Benjamin, D.
    Beretvas, A.
    Beringer, J.
    Berry, T.
    Bhatti, A.
    Binkley, M.
    Bisello, D.
    Bizjak, I.
    Blair, R. E.
    Blocker, C.
    Blumenfeld, B.
    Bocci, A.
    Bodek, A.
    Boisvert, V.
    [J]. PHYSICAL REVIEW LETTERS, 2007, 99 (15)
  • [3] Model-independent and quasi-model-independent search for new physics at CDF
    Aaltonen, T.
    Abulencia, A.
    Adelman, J.
    Akimoto, T.
    Albrow, M. G.
    Alvarez Gonzalez, B.
    Amerio, S.
    Amidei, D.
    Anastassov, A.
    Annovi, A.
    Antos, J.
    Apollinari, G.
    Apresyan, A.
    Arisawa, T.
    Artikov, A.
    Ashmanskas, W.
    Aurisano, A.
    Azfar, F.
    Azzi-Bacchetta, P.
    Azzurri, P.
    Bacchetta, N.
    Badgett, W.
    Barnes, V. E.
    Barnett, B. A.
    Baroiant, S.
    Bartsch, V.
    Bauer, G.
    Beauchemin, P. -H.
    Bedeschi, F.
    Bednar, P.
    Behari, S.
    Bellettini, G.
    Bellinger, J.
    Belloni, A.
    Benjamin, D.
    Beretvas, A.
    Berry, T.
    Bhatti, A.
    Binkley, M.
    Bisello, D.
    Bizjak, I.
    Blair, R. E.
    Blocker, C.
    Blumenfeld, B.
    Bocci, A.
    Bodek, A.
    Boisvert, V.
    Bolla, G.
    Bolshov, A.
    Bortoletto, D.
    [J]. PHYSICAL REVIEW D, 2008, 78 (01):
  • [4] Aaltonen T., ARXIV07122534
  • [5] ASYMPTOTIC FREEDOM IN PARTON LANGUAGE
    ALTARELLI, G
    PARISI, G
    [J]. NUCLEAR PHYSICS B, 1977, 126 (02) : 298 - 318
  • [6] Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions
    Alwall, J.
    Hoche, S.
    Krauss, F.
    Lavesson, N.
    Lonnblad, L.
    Maltoni, F.
    Mangano, M. L.
    Moretti, M.
    Papadopoulos, C. G.
    Piccinini, F.
    Schumann, S.
    Treccani, M.
    Winter, J.
    Worek, M.
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2008, 53 (03): : 473 - 500
  • [7] [Anonymous], HEPPH0612272
  • [8] [Anonymous], HEPPH0609306
  • [9] ATLAS Collab, CERNLHCC9914 ATLAS C, V1
  • [10] ATLAS Collab, CERNLHCC9915 ATLAS C, V2
123456789