doxygen/latest/LauConstants_8hh_source.html

/*

Copyright 2005 University of Warwick


Licensed under the Apache License, Version 2.0 (the "License");

you may not use this file except in compliance with the License.

You may obtain a copy of the License at


    http://www.apache.org/licenses/LICENSE-2.0


Unless required by applicable law or agreed to in writing, software

distributed under the License is distributed on an "AS IS" BASIS,

WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

See the License for the specific language governing permissions and

limitations under the License.

*/


/*

Laura++ package authors:

John Back

Paul Harrison

Thomas Latham

*/


#ifndef LAU_CONSTANTS

#define LAU_CONSTANTS


#include "Rtypes.h"

#include "TMath.h"


namespace LauConstants {


    // Masses updated to PDG 2020 values in March 2021

    const Double_t mD = 1.86965;

    const Double_t mD0 = 1.86483;

    const Double_t mDs = 1.96834;

    const Double_t mB = 5.27934;

    const Double_t mB0 = 5.27965;

    const Double_t mBs0 = 5.36688;

    const Double_t mPi = 0.13957039;

    const Double_t mPi0 = 0.1349768;

    const Double_t mK = 0.493677;

    const Double_t mK0 = 0.497611;

    const Double_t mEta = 0.547862;

    const Double_t mEtaPrime = 0.95778;


    const Double_t mDSq = mD * mD;

    const Double_t mD0Sq = mD0 * mD0;

    const Double_t mDsSq = mDs * mDs;

    const Double_t mBSq = mB * mB;

    const Double_t mB0Sq = mB0 * mB0;

    const Double_t mBs0Sq = mBs0 * mBs0;

    const Double_t mPiSq = mPi * mPi;

    const Double_t mPi0Sq = mPi0 * mPi0;

    const Double_t mKSq = mK * mK;

    const Double_t mK0Sq = mK0 * mK0;

    const Double_t mEtaSq = mEta * mEta;

    const Double_t mEtaPrimeSq = mEtaPrime * mEtaPrime;


    const Double_t tauB = 1.638;

    const Double_t tauB0 = 1.519;

    const Double_t deltaMd = 0.5065;

    const Double_t beta = 22.2 * TMath::DegToRad();

    const Double_t sin2beta = TMath::Sin( 2.0 * beta );


    const Double_t pi = TMath::Pi();

    const Double_t rootPi = TMath::Sqrt( TMath::Pi() );

    const Double_t twoPi = 2.0 * TMath::Pi();

    const Double_t threePi = 3.0 * TMath::Pi();

    const Double_t sixPi = 6.0 * TMath::Pi();

    const Double_t pim4 = 1.0 / TMath::Power( TMath::Pi(), 0.25 );

    const Double_t piBy2 = 0.5 * TMath::Pi();

    const Double_t rootPiBy2 = TMath::Sqrt( 0.5 * TMath::Pi() );

    const Double_t invPi = 1.0 / TMath::Pi();

    const Double_t root2 = TMath::Sqrt( 2.0 );

    const Double_t log4 = TMath::Log( 4.0 );


};    // namespace LauConstants


#endif