- Rev. 2798: fixed a bug that may show up when folding (i.e. at least one among ifoldcsi, foldy, foldphi is set to a value different from 1 in the powheg.input file) is used in combination with the "btlscalereal 1" in the powheg.input file. The bug might have caused the evaluation of the subtraction term at scales evaluated using the real radiation phase space instead of the underlying Born phase space. This does not lead to a violation of NLO accuracy, but is not the intended result. - Rev. 2819: workaround to an lhapdf6 bug in the setq2min routine, that causes the member of a pdf set to change when setq2min is called. - Rev. 2953: lhefread.f did not work with .lhe file with standard Les Houches reweight information, since it was looking for the '' string - Rev. 2993: fixed bug in MadGraphStuff, that prevented the creation of the Born cross section in certain cases (as in single top production) - Rev. 3073: fixed major bug affecting the W2jet generator, such that the kinematics of mu- and anti-nu-mu was interchanged in the W- -> mu- and anti-nu-mu. The bug did not affect the electron channel and the mu+ channel. Reported by Chris Hays from ATLAS (early June 2015) - Rev. 3077: fixed a minor bug in the CKM matrix-element assignement No visible effect in any distribution - Rev. 3116: fixed a bug in the rescaling of the Z-Higgs-Chi coupling when the rescaling in the kappa framework is used This affects ONLY the ggHZ process - Rev. 3118: fixed a bug in HZJ production for the inclusive decay of the Z boson into neutrinos - Rev. 3133: Fixed a bug introduced in rev. 3094., where the introduction of the new experimental feature "fullrwgt" (that used code taken from the HJ subprocess) broke the HJ compilation due to conflicting names. Names have now been made private to the fullrwgt subroutine. - Rev. 3178: Fixed a bug in vbf_wp_wp in the randomization of final state leptons, affecting the decay of W bosons decaying to e, mu and tau leptons. The bug caused the three lepton types not be generated uniformly (i.e. with probability 1/3 each). The bug was not present in the case of decay to two leptons only (e and mu). - Rev. 3180: Fixed bug introduced in revision 3160, when par_maxseeds was make a variable (it was a parameter). This bug prevented the possibility of running POWHEG in single user mode using grids prepared with parallel runs. Reported by Christian Johnson on 25/4/2016. - Rev. 3252: major changes in the reweighting method, and added compression for .lhe files. Tags before these changes are in /trunk/POWHEG-BOX-V2-Before-New-Rwgt and /trunk/User-Processes-V2-Before-New-Rwgt. An illustration of the new features can be found in POWHEG-BOX-V2/Docs/README.Compression-And-Weights. Following these changes, user processes are being corrected to comply with the new scheme. Look at the svn log to follow issue with each process. - Rev 3254 to 3310: Makefiles of User-Processes-V2 fixed to comply with 3252 changes. - Rev 3316: Commented away call to getq2min in HJ/setlocalscales.f that created problems with lhapdf6, following a complain by P. Lenzi. No side effects. - Rev 3317 to 3319: Bugfixes to weakinos, to make it work with rev. after 3252. - Rev 3320 to 3322: fixed problem in POWHEG-BOX-V2/sigcollremn.f when fraction of momentum x becomes > 1 (by tiny roundoff effects). - Rev. 3323: Fixed bug introduced in rev. 3252. Program would crash when reading extra-info-previous-event. - Rev. 3329: Fixed bug introduced in rev. 3252, affecting runs with storemintupb and parallelstage set. - Rev. 3335: Fixed bug in gen_radiation.f that affected only the ttb_NLO_dec process, preventing the generation of events with no emissions at production. The effect on final distributions is very small, but the bug occasionally also caused the program to loop indefinitely while generating events. - Rev. 3336: Introduced Put safety correction in pdfcalls.f, so that if values of x greater than 1 are passed, the program returns zero value in the pdf. If a tiny value above 1 is exceeded, a warning is printed. - Rev. 3354: Wrong declaration of variables in rwl_setup_param_weights.f. It could have caused faulty result when reweighting, if the file to be reweighted had non-integer settings of strenfact or stfacfact. - Rev. 3365: Fixed bug in the inclusive neutrino decay (vdecaymode 12) which was wrongly computing the inclusive decay into charged leptons (vdecaymode 11). The bug affected not only the LH event production but also the previous stages, since the amplitude was computed with charged leptons couplings. Problem reported by Paolo Francavilla and Carlo Pandini. - Rev 3443: Fixed bug in the HJ virtual amplitudes. The amplitudes computed by MCFM were already in CDR. So no need to perform the CDR -> DR conversion Problem reported by Gionata Luisoni - Rev 3451: Fixed bug that may affect all user processes that override the default settings of the fastbtlbound and storemintupb. A parameter controlling the determination of the upper bound was left undefined if fastbtlbound and storemintupb did not appeared explicitly in the powheg.input. This was the case for the ZZ, WW, WZ, Wp_Wp_J_J and disquark subprocesses. - Rev 3455: Fixed bug, reported by Matthias Kesenheimer, such that in weights containing lines of the form key=? the last key was silently ignored. Here ? stands for a single digit value, and there must be no space between the value and for the bug to manifest itself. Other fixes have been added that improve checking of well-formed xml expressions. - Rev 3473: Fixed bug in powheg.input, such that an line at the end of the file was not read properly. - Rev 3474: Fixed bug in rwl_weightlists.f, such that adding weights in the rwgt format (using rwl_format_rwgt) did not work properly. - Rev 3477: Modifications aimed at removing the influence of old style Les Houches reweight methods with the new style ("rwl") one. In lhefwrite.f: make sure that weights are written if the rwl_file variable is set, even if the flg_reweight (old style) flag is not. In pwhg_main: make sure that the new (rwl) procedure for adding weights is followed irrespective of the storeinfo_rwgt (old style) flag settings. These modification should not have any effects if old style and new style flags are not mixed. They were introduced following an exchange with D.Haiden and J.Robinson, that reported unexpected behaviour when old and new style flags were present. - Rev 3612: Fixed bug WW code, inherited from MCFM code, affecting the anomalous coupling results for off-shell production. The bug was signalled by Piccinini and Chiesa.