The Economical <svg style="vertical-align:-4.53427pt;width:232.325px;" id="M1" height="21.6875" version="1.1" viewBox="0 0 232.325 21.6875" width="232.325" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><g transform="matrix(.022,-0,0,-.022,.062,15.975)"><path id="x1D446" d="M457 488l-30 -3q-17 148 -131 148q-53 0 -84.5 -34.5t-31.5 -82.5q0 -42 25.5 -72t74.5 -62l33 -22q63 -42 95 -85t32 -102q0 -84 -67 -137t-163 -53q-58 0 -113 22t-70 43l-4 152l27 4q4 -32 15 -62.5t31 -59.5t53.5 -47t76.5 -18q56 0 92 35t36 96q0 39 -25 70t-78 68
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M435 74l-141 143l-141 -143q63 -50 141 -50t141 50z" /></g><g transform="matrix(.022,-0,0,-.022,88.997,15.975)"><use xlink:href="#x1D446" /></g><g transform="matrix(.022,-0,0,-.022,99.757,15.975)"><use xlink:href="#x1D448" /></g><g transform="matrix(.022,-0,0,-.022,116.861,15.975)"><use xlink:href="#x28" /></g><g transform="matrix(.022,-0,0,-.022,124.617,15.975)"><use xlink:href="#x33" /></g><g transform="matrix(.022,-0,0,-.022,135.376,15.975)"><use xlink:href="#x29" /></g><g transform="matrix(.016,-0,0,-.016,143.138,21.363)"><path id="x1D43F" d="M559 163q-23 -66 -68 -163h-474l6 26q62 4 79.5 19.5t28.5 75.5l78 409q7 35 8.5 49t-8 25t-24 13t-51.5 5l5 28h266l-6 -28q-65 -5 -79.5 -18t-25.5 -74l-76 -406q-10 -57 14 -75q12 -13 96 -13q93 0 126 29q41 40 76 109z" /></g><g transform="matrix(.022,-0,0,-.022,157.7,15.975)"><use xlink:href="#x2297" /></g><g transform="matrix(.022,-0,0,-.022,175.835,15.975)"><use xlink:href="#x1D448" /></g><g transform="matrix(.022,-0,0,-.022,192.938,15.975)"><use xlink:href="#x28" /></g><g transform="matrix(.022,-0,0,-.022,200.694,15.975)"><path id="x31" d="M384 0h-275v27q67 5 81.5 18.5t14.5 68.5v385q0 38 -7.5 47.5t-40.5 10.5l-48 2v24q85 15 178 52v-521q0 -55 14.5 -68.5t82.5 -18.5v-27z" /></g><g transform="matrix(.022,-0,0,-.022,211.454,15.975)"><use xlink:href="#x29" /></g><g transform="matrix(.016,-0,0,-.016,219.212,21.363)"><path id="x1D44B" d="M775 650l-6 -28q-60 -6 -81.5 -16t-61.5 -54l-175 -191l125 -243q30 -58 48.5 -71t82.5 -19l-5 -28h-275l7 28l35 4q31 4 37 12t-6 34l-108 216q-140 -165 -177 -219q-16 -22 -10.5 -30.5t41.5 -13.5l22 -3l-7 -28h-244l8 28q52 4 75 15.5t67 52.5q48 46 206 231
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<table><svg height="10.575" id="M471" style="vertical-align:-0.20064pt" version="1.1" viewbox="0 0 17.9625 10.575" width="17.9625" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.575)">
<g transform="translate(72,-63.54)">
<text transform="matrix(1,0,0,-1,-71.95,63.79)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑊</tspan>
</text>
</g>
</g>
</svg> width as function of <svg height="10.975" id="M472" style="vertical-align:-0.13794pt" version="1.1" viewbox="0 0 31.762501 10.975" width="31.762501" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,10.975)">
<g transform="translate(72,-63.22)">
<text transform="matrix(1,0,0,-1,-71.95,63.41)">
<tspan style="font-size: 12.50px; " x="0" y="0">s</tspan>
<tspan style="font-size: 12.50px; " x="4.863667" y="0">i</tspan>
<tspan style="font-size: 12.50px; " x="8.3395014" y="0">n</tspan>
<tspan style="font-size: 12.50px; " x="18.754499" y="0">𝜃</tspan>
</text>
</g>
</g>
</svg>,
and the horizontal lines are an upper and a lower limit.</table>

Advances in High Energy Physics

fig1

Figure 1

Figure 1: The Economical <svg style="vertical-align:-4.53427pt;width:232.325px;" id="M1" height="21.6875" version="1.1" viewBox="0 0 232.325 21.6875" width="232.325" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><g transform="matrix(.022,-0,0,-.022,.062,15.975)"><path id="x1D446" d="M457 488l-30 -3q-17 148 -131 148q-53 0 -84.5 -34.5t-31.5 -82.5q0 -42 25.5 -72t74.5 -62l33 -22q63 -42 95 -85t32 -102q0 -84 -67 -137t-163 -53q-58 0 -113 22t-70 43l-4 152l27 4q4 -32 15 -62.5t31 -59.5t53.5 -47t76.5 -18q56 0 92 35t36 96q0 39 -25 70t-78 68
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q0 45 -26.5 69.5t-68.5 24.5q-67 0 -120 -79l-20 20l43 63q51 56 127 56h1q66 0 107 -37t41 -95q0 -42 -31 -71q-22 -23 -68 -54z" /></g><g transform="matrix(.022,-0,0,-.022,46.442,15.975)"><path id="x29" d="M275 270q0 -296 -211 -440l-19 23q75 62 116.5 174t41.5 243t-42 243t-116 173l19 24q211 -144 211 -440z" /></g><g transform="matrix(.016,-0,0,-.016,54.2,21.363)"><path id="x1D436" d="M682 629q-1 -16 -1.5 -72t-2.5 -86l-31 -4q-5 92 -51 129t-139 37q-100 0 -177 -49t-116 -125t-39 -162q0 -122 66 -201t182 -79q83 0 137 42.5t112 128.5l26 -15q-12 -31 -42.5 -88t-45.5 -75q-139 -27 -199 -27q-148 0 -243 81.5t-95 226.5q0 173 129.5 274.5
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l-110 215q-26 51 -44 63t-72 17l6 28h250l-6 -28l-27 -4q-30 -5 -35 -10t3 -27q17 -43 95 -190q70 78 154 185q15 21 10 29.5t-33 12.5l-30 4l5 28h236z" /></g></svg> Model 

Advances in High Energy Physics

The Economical Model

Figure 1